./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product32.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_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5711b4c0ea669ac051f0ad97dbc3a1a473a1622b7d95c937325001ba5ca1073b --- 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 [2022-12-14 10:48:57,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:48:57,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:48:57,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:48:57,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:48:57,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:48:57,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:48:57,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:48:57,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:48:57,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:48:57,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:48:57,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:48:57,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:48:57,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:48:57,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:48:57,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:48:57,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:48:57,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:48:57,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:48:57,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:48:57,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:48:57,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:48:57,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:48:57,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:48:57,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:48:57,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:48:57,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:48:57,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:48:57,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:48:57,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:48:57,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:48:57,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:48:57,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:48:57,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:48:57,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:48:57,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:48:57,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:48:57,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:48:57,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:48:57,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:48:57,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:48:57,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:48:57,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:48:57,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:48:57,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:48:57,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:48:57,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:48:57,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:48:57,781 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:48:57,781 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:48:57,782 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:48:57,782 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:48:57,782 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:48:57,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:48:57,782 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:48:57,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:48:57,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:48:57,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:48:57,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:48:57,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:48:57,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:48:57,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:48:57,784 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:48:57,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:48:57,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:48:57,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:48:57,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:48:57,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:48:57,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:48:57,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5711b4c0ea669ac051f0ad97dbc3a1a473a1622b7d95c937325001ba5ca1073b [2022-12-14 10:48:57,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:48:57,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:48:57,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:48:57,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:48:57,968 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:48:57,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product32.cil.c [2022-12-14 10:49:00,552 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:49:00,776 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:49:00,776 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/sv-benchmarks/c/product-lines/email_spec4_product32.cil.c [2022-12-14 10:49:00,787 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/data/779b7beea/b656fe4e645547c187d554800b666482/FLAGeb6689e5f [2022-12-14 10:49:00,798 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/data/779b7beea/b656fe4e645547c187d554800b666482 [2022-12-14 10:49:00,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:49:00,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:49:00,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:49:00,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:49:00,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:49:00,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:49:00" (1/1) ... [2022-12-14 10:49:00,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668078d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:00, skipping insertion in model container [2022-12-14 10:49:00,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:49:00" (1/1) ... [2022-12-14 10:49:00,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:49:00,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:49:01,085 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,086 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,089 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,095 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_3a9febe4-9c46-420e-9a9d-63e1cd12b085/sv-benchmarks/c/product-lines/email_spec4_product32.cil.c[32699,32712] [2022-12-14 10:49:01,140 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,146 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,147 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,148 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,158 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,160 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:49:01,222 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:49:01,253 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,254 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,256 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,260 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_3a9febe4-9c46-420e-9a9d-63e1cd12b085/sv-benchmarks/c/product-lines/email_spec4_product32.cil.c[32699,32712] [2022-12-14 10:49:01,267 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,269 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,270 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,271 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,276 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,279 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:49:01,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:49:01,343 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:49:01,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01 WrapperNode [2022-12-14 10:49:01,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:49:01,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:49:01,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:49:01,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:49:01,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,429 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 987 [2022-12-14 10:49:01,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:49:01,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:49:01,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:49:01,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:49:01,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,491 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:49:01,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:49:01,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:49:01,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:49:01,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (1/1) ... [2022-12-14 10:49:01,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:49:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:49:01,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:49:01,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:49:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 10:49:01,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 10:49:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 10:49:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 10:49:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 10:49:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 10:49:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 10:49:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 10:49:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 10:49:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 10:49:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 10:49:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 10:49:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 10:49:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 10:49:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 10:49:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 10:49:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 10:49:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 10:49:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 10:49:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 10:49:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 10:49:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 10:49:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 10:49:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 10:49:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 10:49:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 10:49:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 10:49:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 10:49:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 10:49:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 10:49:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 10:49:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:49:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 10:49:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 10:49:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 10:49:01,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 10:49:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 10:49:01,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 10:49:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 10:49:01,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 10:49:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 10:49:01,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 10:49:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 10:49:01,573 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 10:49:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 10:49:01,573 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 10:49:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 10:49:01,573 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 10:49:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 10:49:01,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 10:49:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 10:49:01,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 10:49:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 10:49:01,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 10:49:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:49:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 10:49:01,574 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 10:49:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 10:49:01,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 10:49:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:49:01,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:49:01,751 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:49:01,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:49:02,371 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:49:02,737 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:49:02,737 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:49:02,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:49:02 BoogieIcfgContainer [2022-12-14 10:49:02,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:49:02,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:49:02,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:49:02,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:49:02,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:49:00" (1/3) ... [2022-12-14 10:49:02,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b2ffb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:49:02, skipping insertion in model container [2022-12-14 10:49:02,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:01" (2/3) ... [2022-12-14 10:49:02,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b2ffb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:49:02, skipping insertion in model container [2022-12-14 10:49:02,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:49:02" (3/3) ... [2022-12-14 10:49:02,745 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product32.cil.c [2022-12-14 10:49:02,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:49:02,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:49:02,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:49:02,808 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=FINITE_AUTOMATA, 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;@10f33fc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:49:02,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:49:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-14 10:49:02,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 10:49:02,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:02,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:02,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:49:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1462926148, now seen corresponding path program 1 times [2022-12-14 10:49:02,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:02,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134678425] [2022-12-14 10:49:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:02,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:49:03,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:03,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134678425] [2022-12-14 10:49:03,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134678425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:03,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:03,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:49:03,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778389148] [2022-12-14 10:49:03,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:03,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:49:03,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:49:03,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:49:03,090 INFO L87 Difference]: Start difference. First operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:49:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:03,238 INFO L93 Difference]: Finished difference Result 346 states and 455 transitions. [2022-12-14 10:49:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:49:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-12-14 10:49:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:03,253 INFO L225 Difference]: With dead ends: 346 [2022-12-14 10:49:03,254 INFO L226 Difference]: Without dead ends: 216 [2022-12-14 10:49:03,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:49:03,262 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:03,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:49:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-12-14 10:49:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-12-14 10:49:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.278688524590164) internal successors, (156), 126 states have internal predecessors, (156), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-12-14 10:49:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2022-12-14 10:49:03,316 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 75 [2022-12-14 10:49:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:03,317 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2022-12-14 10:49:03,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:49:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2022-12-14 10:49:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 10:49:03,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:03,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:49:03,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:49:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2061465589, now seen corresponding path program 1 times [2022-12-14 10:49:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:03,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720147490] [2022-12-14 10:49:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:49:03,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:03,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720147490] [2022-12-14 10:49:03,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720147490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:03,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:03,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:49:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659840995] [2022-12-14 10:49:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:49:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:49:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:03,468 INFO L87 Difference]: Start difference. First operand 216 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:49:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:03,577 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2022-12-14 10:49:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:49:03,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-12-14 10:49:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:03,579 INFO L225 Difference]: With dead ends: 342 [2022-12-14 10:49:03,579 INFO L226 Difference]: Without dead ends: 218 [2022-12-14 10:49:03,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:03,581 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:03,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:49:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-12-14 10:49:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-12-14 10:49:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-12-14 10:49:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 287 transitions. [2022-12-14 10:49:03,601 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 287 transitions. Word has length 76 [2022-12-14 10:49:03,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:03,601 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 287 transitions. [2022-12-14 10:49:03,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:49:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 287 transitions. [2022-12-14 10:49:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 10:49:03,603 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:03,603 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 10:49:03,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:49:03,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:49:03,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:03,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2044214919, now seen corresponding path program 1 times [2022-12-14 10:49:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:03,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331670110] [2022-12-14 10:49:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:03,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:49:03,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:03,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331670110] [2022-12-14 10:49:03,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331670110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:03,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:03,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:49:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719692935] [2022-12-14 10:49:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:03,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:49:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:49:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:03,690 INFO L87 Difference]: Start difference. First operand 218 states and 287 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:49:03,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:03,818 INFO L93 Difference]: Finished difference Result 471 states and 641 transitions. [2022-12-14 10:49:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:49:03,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-12-14 10:49:03,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:03,820 INFO L225 Difference]: With dead ends: 471 [2022-12-14 10:49:03,820 INFO L226 Difference]: Without dead ends: 271 [2022-12-14 10:49:03,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:03,821 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 59 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:03,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 507 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:49:03,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-12-14 10:49:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2022-12-14 10:49:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 162 states have internal predecessors, (213), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-12-14 10:49:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2022-12-14 10:49:03,835 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 81 [2022-12-14 10:49:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:03,835 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2022-12-14 10:49:03,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:49:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2022-12-14 10:49:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 10:49:03,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:03,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 10:49:03,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:49:03,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:49:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2069156573, now seen corresponding path program 1 times [2022-12-14 10:49:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:03,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227575599] [2022-12-14 10:49:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:49:03,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:03,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227575599] [2022-12-14 10:49:03,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227575599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:49:03,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428687139] [2022-12-14 10:49:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:03,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:49:03,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:49:03,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:49:03,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:49:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:04,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:49:04,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:49:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:49:04,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:49:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:49:04,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428687139] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:49:04,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [490418802] [2022-12-14 10:49:04,336 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 10:49:04,336 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:49:04,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:49:04,344 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:49:04,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:49:29,275 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:49:29,562 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 265 for LOIs [2022-12-14 10:49:31,351 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-12-14 10:49:31,387 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:49:31,676 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-12-14 10:49:34,435 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 275 for LOIs [2022-12-14 10:49:42,997 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 450 for LOIs [2022-12-14 10:49:43,561 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 247 for LOIs [2022-12-14 10:49:43,628 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-12-14 10:49:43,667 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 10:49:48,173 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 249 for LOIs [2022-12-14 10:49:48,212 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 252 for LOIs [2022-12-14 10:49:48,257 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:49:53,695 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 552 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:50:47,091 WARN L233 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 473 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:51:46,647 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3729#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (<= |old(~__ste_email_isEncrypted1~0)| 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_~tmp~12#1| 2) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~11#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= ~__ste_Client_counter~0 0) (<= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~pubkey~0#1|) (<= 0 ~__ste_Client_AddressBook2_Alias2~0) (<= ~__ste_client_forwardReceiver0~0 0) (<= 0 ~__ste_Client_Keyring2_PublicKey1~0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= 0 ~__ste_email_subject0~0.base) (<= ~__ste_email_subject1~0.offset 0) (<= ~__ste_Client_AddressBook2_Alias0~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= 0 ~__ste_Client_AddressBook1_Address1~0) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (<= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey2~0) (<= 0 ~__ste_ClientAddressBook_size0~0) (<= 2 ~rjh~0) (<= 0 ~__SELECTED_FEATURE_Encrypt~0) (<= 0 ~__ste_client_autoResponse1~0) (<= 0 ~__ste_client_outbuffer0~0) (<= |old(~queued_client~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= ~chuck~0 3) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= 0 ~__ste_client_outbuffer1~0) (<= 0 ~__ste_ClientAddressBook_size1~0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~18#1| 2147483647) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#1|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (<= ~__ste_client_name0~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Alias1~0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= 0 ~__ste_Client_Keyring0_User0~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (<= 0 ~__SELECTED_FEATURE_AutoResponder~0) (= ~__ste_email_body0~0.offset 0) (<= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 ~__ste_email_isSigned1~0) (<= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#1| 1) (<= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~5#1| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (<= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_email_id0~0 0) (<= 0 ~__ste_client_name2~0.offset) (= ~head~0.offset 0) (<= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~__ste_Client_AddressBook2_Alias1~0 0) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_Email_counter~0 0) (<= ~__ste_email_subject0~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~18#1| 2147483648)) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_subject1~0.offset) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (<= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~12#1|) (<= 0 ~__ste_email_id1~0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (<= ~__ste_client_autoResponse0~0 0) (= ~__ste_client_privateKey0~0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~21#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= 0 ~__ste_Client_Keyring2_PublicKey0~0) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= ~__ste_ClientAddressBook_size0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_client_name0~0.base) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (<= 0 ~__ste_Client_Keyring1_PublicKey1~0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (<= 0 ~queued_client~0) (<= 0 ~__ste_client_forwardReceiver0~0) (<= 0 ~__SELECTED_FEATURE_Keys~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey0~0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= |old(~queue_empty~0)| 1) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#1| 0)) (<= ~__ste_client_outbuffer0~0 0) (<= ~head~0.base 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~21#1| 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= ~__ste_client_name0~0.offset 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= ~rjh~0 2) (<= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 ~__ste_Client_AddressBook2_Alias0~0) (<= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (<= 0 ~__ste_Client_Keyring2_PublicKey2~0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 0 ~__GUIDSL_NON_TERMINAL_main~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= 3 ~chuck~0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (<= ~__ste_client_outbuffer1~0 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~5#1|) (<= ~__ste_ClientAddressBook_size1~0 0) (<= 0 ~__ste_client_name1~0.base) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~11#1| 2147483648)) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 10:51:46,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:51:46,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:51:46,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 10:51:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206734826] [2022-12-14 10:51:46,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:51:46,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:51:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:51:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 10:51:46,652 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 10:51:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:46,854 INFO L93 Difference]: Finished difference Result 665 states and 990 transitions. [2022-12-14 10:51:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:51:46,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 82 [2022-12-14 10:51:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:46,858 INFO L225 Difference]: With dead ends: 665 [2022-12-14 10:51:46,859 INFO L226 Difference]: Without dead ends: 541 [2022-12-14 10:51:46,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 118.3s TimeCoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 10:51:46,862 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 314 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:46,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 802 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:51:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-12-14 10:51:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 526. [2022-12-14 10:51:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 339 states have (on average 1.471976401179941) internal successors, (499), 343 states have internal predecessors, (499), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 156 states have call predecessors, (157), 157 states have call successors, (157) [2022-12-14 10:51:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 814 transitions. [2022-12-14 10:51:46,896 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 814 transitions. Word has length 82 [2022-12-14 10:51:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:46,897 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 814 transitions. [2022-12-14 10:51:46,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 10:51:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 814 transitions. [2022-12-14 10:51:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 10:51:46,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:46,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:46,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:51:47,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:51:47,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash -768307659, now seen corresponding path program 1 times [2022-12-14 10:51:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:47,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515359923] [2022-12-14 10:51:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:47,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:47,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515359923] [2022-12-14 10:51:47,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515359923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:47,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:47,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569483574] [2022-12-14 10:51:47,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:47,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:47,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:47,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:47,249 INFO L87 Difference]: Start difference. First operand 526 states and 814 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:47,367 INFO L93 Difference]: Finished difference Result 1282 states and 2026 transitions. [2022-12-14 10:51:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2022-12-14 10:51:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:47,370 INFO L225 Difference]: With dead ends: 1282 [2022-12-14 10:51:47,370 INFO L226 Difference]: Without dead ends: 788 [2022-12-14 10:51:47,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:47,373 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 57 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:47,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 514 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-12-14 10:51:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 783. [2022-12-14 10:51:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 517 states have (on average 1.493230174081238) internal successors, (772), 521 states have internal predecessors, (772), 237 states have call successors, (237), 28 states have call predecessors, (237), 28 states have return successors, (236), 235 states have call predecessors, (236), 236 states have call successors, (236) [2022-12-14 10:51:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1245 transitions. [2022-12-14 10:51:47,407 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1245 transitions. Word has length 88 [2022-12-14 10:51:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:47,407 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1245 transitions. [2022-12-14 10:51:47,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1245 transitions. [2022-12-14 10:51:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 10:51:47,413 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:47,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:47,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:51:47,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:47,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 103206830, now seen corresponding path program 1 times [2022-12-14 10:51:47,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:47,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778210262] [2022-12-14 10:51:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:47,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:47,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778210262] [2022-12-14 10:51:47,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778210262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:47,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:47,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293978855] [2022-12-14 10:51:47,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:47,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:47,512 INFO L87 Difference]: Start difference. First operand 783 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:47,651 INFO L93 Difference]: Finished difference Result 1904 states and 3073 transitions. [2022-12-14 10:51:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2022-12-14 10:51:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:47,658 INFO L225 Difference]: With dead ends: 1904 [2022-12-14 10:51:47,658 INFO L226 Difference]: Without dead ends: 1183 [2022-12-14 10:51:47,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:47,669 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 55 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:47,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 502 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-12-14 10:51:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1178. [2022-12-14 10:51:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 793 states have (on average 1.5031525851197982) internal successors, (1192), 797 states have internal predecessors, (1192), 356 states have call successors, (356), 28 states have call predecessors, (356), 28 states have return successors, (355), 354 states have call predecessors, (355), 355 states have call successors, (355) [2022-12-14 10:51:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1903 transitions. [2022-12-14 10:51:47,737 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1903 transitions. Word has length 89 [2022-12-14 10:51:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:47,737 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1903 transitions. [2022-12-14 10:51:47,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1903 transitions. [2022-12-14 10:51:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 10:51:47,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:47,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:47,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:51:47,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:47,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1910593209, now seen corresponding path program 1 times [2022-12-14 10:51:47,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:47,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000955748] [2022-12-14 10:51:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:47,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:47,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000955748] [2022-12-14 10:51:47,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000955748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:47,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:47,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:47,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001663411] [2022-12-14 10:51:47,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:47,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:47,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:47,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:47,822 INFO L87 Difference]: Start difference. First operand 1178 states and 1903 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:47,984 INFO L93 Difference]: Finished difference Result 2807 states and 4585 transitions. [2022-12-14 10:51:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:47,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2022-12-14 10:51:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:47,995 INFO L225 Difference]: With dead ends: 2807 [2022-12-14 10:51:47,995 INFO L226 Difference]: Without dead ends: 1771 [2022-12-14 10:51:47,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:47,998 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 53 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:47,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 497 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:48,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-12-14 10:51:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1766. [2022-12-14 10:51:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1219 states have (on average 1.509433962264151) internal successors, (1840), 1223 states have internal predecessors, (1840), 518 states have call successors, (518), 28 states have call predecessors, (518), 28 states have return successors, (517), 516 states have call predecessors, (517), 517 states have call successors, (517) [2022-12-14 10:51:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2875 transitions. [2022-12-14 10:51:48,067 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2875 transitions. Word has length 90 [2022-12-14 10:51:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:48,068 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2875 transitions. [2022-12-14 10:51:48,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2875 transitions. [2022-12-14 10:51:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 10:51:48,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:48,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:51:48,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash 381372301, now seen corresponding path program 1 times [2022-12-14 10:51:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:48,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521816152] [2022-12-14 10:51:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:48,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:48,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521816152] [2022-12-14 10:51:48,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521816152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:48,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:48,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371149376] [2022-12-14 10:51:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:48,136 INFO L87 Difference]: Start difference. First operand 1766 states and 2875 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:48,304 INFO L93 Difference]: Finished difference Result 4192 states and 6893 transitions. [2022-12-14 10:51:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:48,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 91 [2022-12-14 10:51:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:48,314 INFO L225 Difference]: With dead ends: 4192 [2022-12-14 10:51:48,314 INFO L226 Difference]: Without dead ends: 2705 [2022-12-14 10:51:48,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:48,319 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 51 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:48,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 495 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-12-14 10:51:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2700. [2022-12-14 10:51:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 1908 states have (on average 1.5125786163522013) internal successors, (2886), 1912 states have internal predecessors, (2886), 763 states have call successors, (763), 28 states have call predecessors, (763), 28 states have return successors, (762), 761 states have call predecessors, (762), 762 states have call successors, (762) [2022-12-14 10:51:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 4411 transitions. [2022-12-14 10:51:48,451 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 4411 transitions. Word has length 91 [2022-12-14 10:51:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:48,451 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 4411 transitions. [2022-12-14 10:51:48,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 4411 transitions. [2022-12-14 10:51:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 10:51:48,458 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:48,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:51:48,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1011496043, now seen corresponding path program 1 times [2022-12-14 10:51:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:48,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385767495] [2022-12-14 10:51:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:48,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:48,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385767495] [2022-12-14 10:51:48,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385767495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:48,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:48,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:48,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142702757] [2022-12-14 10:51:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:48,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:48,513 INFO L87 Difference]: Start difference. First operand 2700 states and 4411 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:48,768 INFO L93 Difference]: Finished difference Result 6708 states and 11053 transitions. [2022-12-14 10:51:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-12-14 10:51:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:48,783 INFO L225 Difference]: With dead ends: 6708 [2022-12-14 10:51:48,783 INFO L226 Difference]: Without dead ends: 4430 [2022-12-14 10:51:48,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:48,789 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 49 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:48,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 508 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2022-12-14 10:51:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4425. [2022-12-14 10:51:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 3140 states have (on average 1.5028662420382166) internal successors, (4719), 3144 states have internal predecessors, (4719), 1256 states have call successors, (1256), 28 states have call predecessors, (1256), 28 states have return successors, (1255), 1254 states have call predecessors, (1255), 1255 states have call successors, (1255) [2022-12-14 10:51:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 7230 transitions. [2022-12-14 10:51:49,005 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 7230 transitions. Word has length 92 [2022-12-14 10:51:49,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:49,005 INFO L495 AbstractCegarLoop]: Abstraction has 4425 states and 7230 transitions. [2022-12-14 10:51:49,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:49,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 7230 transitions. [2022-12-14 10:51:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 10:51:49,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:49,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:49,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:51:49,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1400028055, now seen corresponding path program 1 times [2022-12-14 10:51:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:49,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006251637] [2022-12-14 10:51:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:49,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:49,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006251637] [2022-12-14 10:51:49,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006251637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:49,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:49,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:49,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078007062] [2022-12-14 10:51:49,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:49,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:49,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:49,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:49,077 INFO L87 Difference]: Start difference. First operand 4425 states and 7230 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:49,434 INFO L93 Difference]: Finished difference Result 11124 states and 18338 transitions. [2022-12-14 10:51:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:49,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-12-14 10:51:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:49,461 INFO L225 Difference]: With dead ends: 11124 [2022-12-14 10:51:49,461 INFO L226 Difference]: Without dead ends: 7387 [2022-12-14 10:51:49,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:49,472 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 47 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:49,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 500 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2022-12-14 10:51:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 7382. [2022-12-14 10:51:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7382 states, 5275 states have (on average 1.498388625592417) internal successors, (7904), 5279 states have internal predecessors, (7904), 2078 states have call successors, (2078), 28 states have call predecessors, (2078), 28 states have return successors, (2077), 2076 states have call predecessors, (2077), 2077 states have call successors, (2077) [2022-12-14 10:51:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 12059 transitions. [2022-12-14 10:51:49,870 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 12059 transitions. Word has length 93 [2022-12-14 10:51:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:49,871 INFO L495 AbstractCegarLoop]: Abstraction has 7382 states and 12059 transitions. [2022-12-14 10:51:49,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 12059 transitions. [2022-12-14 10:51:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 10:51:49,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:49,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:49,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:51:49,886 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1637924855, now seen corresponding path program 1 times [2022-12-14 10:51:49,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:49,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756951103] [2022-12-14 10:51:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:49,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:49,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756951103] [2022-12-14 10:51:49,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756951103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:49,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:49,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:49,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649589603] [2022-12-14 10:51:49,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:49,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:49,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:49,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:49,941 INFO L87 Difference]: Start difference. First operand 7382 states and 12059 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:50,469 INFO L93 Difference]: Finished difference Result 18591 states and 30600 transitions. [2022-12-14 10:51:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-12-14 10:51:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:50,505 INFO L225 Difference]: With dead ends: 18591 [2022-12-14 10:51:50,505 INFO L226 Difference]: Without dead ends: 12331 [2022-12-14 10:51:50,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:50,516 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 45 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:50,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 496 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2022-12-14 10:51:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12326. [2022-12-14 10:51:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12326 states, 9016 states have (on average 1.5001109139307898) internal successors, (13525), 9020 states have internal predecessors, (13525), 3281 states have call successors, (3281), 28 states have call predecessors, (3281), 28 states have return successors, (3280), 3279 states have call predecessors, (3280), 3280 states have call successors, (3280) [2022-12-14 10:51:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12326 states to 12326 states and 20086 transitions. [2022-12-14 10:51:51,217 INFO L78 Accepts]: Start accepts. Automaton has 12326 states and 20086 transitions. Word has length 94 [2022-12-14 10:51:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:51,217 INFO L495 AbstractCegarLoop]: Abstraction has 12326 states and 20086 transitions. [2022-12-14 10:51:51,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 12326 states and 20086 transitions. [2022-12-14 10:51:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 10:51:51,232 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:51,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:51,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:51:51,232 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1493972136, now seen corresponding path program 1 times [2022-12-14 10:51:51,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:51,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400037199] [2022-12-14 10:51:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:51,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:51,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:51,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400037199] [2022-12-14 10:51:51,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400037199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:51,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:51,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:51,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062768074] [2022-12-14 10:51:51,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:51,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:51,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:51,285 INFO L87 Difference]: Start difference. First operand 12326 states and 20086 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:52,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:52,240 INFO L93 Difference]: Finished difference Result 32595 states and 53462 transitions. [2022-12-14 10:51:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:52,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2022-12-14 10:51:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:52,308 INFO L225 Difference]: With dead ends: 32595 [2022-12-14 10:51:52,308 INFO L226 Difference]: Without dead ends: 21843 [2022-12-14 10:51:52,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:52,332 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 43 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:52,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 500 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21843 states. [2022-12-14 10:51:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21843 to 21838. [2022-12-14 10:51:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21838 states, 16078 states have (on average 1.4925985819131733) internal successors, (23998), 16082 states have internal predecessors, (23998), 5731 states have call successors, (5731), 28 states have call predecessors, (5731), 28 states have return successors, (5730), 5729 states have call predecessors, (5730), 5730 states have call successors, (5730) [2022-12-14 10:51:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21838 states to 21838 states and 35459 transitions. [2022-12-14 10:51:53,500 INFO L78 Accepts]: Start accepts. Automaton has 21838 states and 35459 transitions. Word has length 95 [2022-12-14 10:51:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:53,500 INFO L495 AbstractCegarLoop]: Abstraction has 21838 states and 35459 transitions. [2022-12-14 10:51:53,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 21838 states and 35459 transitions. [2022-12-14 10:51:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 10:51:53,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:53,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:53,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:51:53,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1935660145, now seen corresponding path program 1 times [2022-12-14 10:51:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:53,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600998021] [2022-12-14 10:51:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:53,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:53,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:53,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600998021] [2022-12-14 10:51:53,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600998021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:53,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:53,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669725149] [2022-12-14 10:51:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:53,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:53,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:53,592 INFO L87 Difference]: Start difference. First operand 21838 states and 35459 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:55,482 INFO L93 Difference]: Finished difference Result 59282 states and 96714 transitions. [2022-12-14 10:51:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:55,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2022-12-14 10:51:55,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:55,605 INFO L225 Difference]: With dead ends: 59282 [2022-12-14 10:51:55,605 INFO L226 Difference]: Without dead ends: 39613 [2022-12-14 10:51:55,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:55,653 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 41 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:55,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 502 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39613 states. [2022-12-14 10:51:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39613 to 39608. [2022-12-14 10:51:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39608 states, 29335 states have (on average 1.4819839781830577) internal successors, (43474), 29339 states have internal predecessors, (43474), 10244 states have call successors, (10244), 28 states have call predecessors, (10244), 28 states have return successors, (10243), 10242 states have call predecessors, (10243), 10243 states have call successors, (10243) [2022-12-14 10:51:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39608 states to 39608 states and 63961 transitions. [2022-12-14 10:51:57,571 INFO L78 Accepts]: Start accepts. Automaton has 39608 states and 63961 transitions. Word has length 96 [2022-12-14 10:51:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:57,572 INFO L495 AbstractCegarLoop]: Abstraction has 39608 states and 63961 transitions. [2022-12-14 10:51:57,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:51:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 39608 states and 63961 transitions. [2022-12-14 10:51:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 10:51:57,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:57,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:57,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:51:57,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:57,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1714292952, now seen corresponding path program 1 times [2022-12-14 10:51:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:57,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666645037] [2022-12-14 10:51:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:57,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:51:57,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666645037] [2022-12-14 10:51:57,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666645037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:57,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:57,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:57,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541917540] [2022-12-14 10:51:57,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:57,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:57,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:57,642 INFO L87 Difference]: Start difference. First operand 39608 states and 63961 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:52:01,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:01,071 INFO L93 Difference]: Finished difference Result 73180 states and 118349 transitions. [2022-12-14 10:52:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:52:01,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-12-14 10:52:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:01,275 INFO L225 Difference]: With dead ends: 73180 [2022-12-14 10:52:01,275 INFO L226 Difference]: Without dead ends: 73056 [2022-12-14 10:52:01,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:52:01,303 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 39 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:01,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 502 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:52:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73056 states. [2022-12-14 10:52:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73056 to 73051. [2022-12-14 10:52:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73051 states, 54410 states have (on average 1.4680389634258408) internal successors, (79876), 54414 states have internal predecessors, (79876), 18612 states have call successors, (18612), 28 states have call predecessors, (18612), 28 states have return successors, (18611), 18610 states have call predecessors, (18611), 18611 states have call successors, (18611) [2022-12-14 10:52:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73051 states to 73051 states and 117099 transitions. [2022-12-14 10:52:04,648 INFO L78 Accepts]: Start accepts. Automaton has 73051 states and 117099 transitions. Word has length 97 [2022-12-14 10:52:04,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:04,648 INFO L495 AbstractCegarLoop]: Abstraction has 73051 states and 117099 transitions. [2022-12-14 10:52:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 10:52:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 73051 states and 117099 transitions. [2022-12-14 10:52:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 10:52:04,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:04,669 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:52:04,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:52:04,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:52:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1227185456, now seen corresponding path program 1 times [2022-12-14 10:52:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:04,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921963404] [2022-12-14 10:52:04,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:04,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:52:05,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:05,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921963404] [2022-12-14 10:52:05,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921963404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:05,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:05,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 10:52:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538603441] [2022-12-14 10:52:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 10:52:05,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 10:52:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:52:05,716 INFO L87 Difference]: Start difference. First operand 73051 states and 117099 transitions. Second operand has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 10:52:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:10,889 INFO L93 Difference]: Finished difference Result 73215 states and 117348 transitions. [2022-12-14 10:52:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 10:52:10,889 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 98 [2022-12-14 10:52:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:11,097 INFO L225 Difference]: With dead ends: 73215 [2022-12-14 10:52:11,097 INFO L226 Difference]: Without dead ends: 73211 [2022-12-14 10:52:11,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 10:52:11,115 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 460 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:11,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 3928 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2798 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 10:52:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73211 states. [2022-12-14 10:52:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73211 to 73131. [2022-12-14 10:52:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73131 states, 54454 states have (on average 1.4678444191427626) internal successors, (79930), 54461 states have internal predecessors, (79930), 18644 states have call successors, (18644), 33 states have call predecessors, (18644), 32 states have return successors, (18641), 18640 states have call predecessors, (18641), 18641 states have call successors, (18641) [2022-12-14 10:52:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73131 states to 73131 states and 117215 transitions. [2022-12-14 10:52:15,160 INFO L78 Accepts]: Start accepts. Automaton has 73131 states and 117215 transitions. Word has length 98 [2022-12-14 10:52:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:15,161 INFO L495 AbstractCegarLoop]: Abstraction has 73131 states and 117215 transitions. [2022-12-14 10:52:15,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 10:52:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 73131 states and 117215 transitions. [2022-12-14 10:52:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-14 10:52:15,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:15,292 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 10:52:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:52:15,292 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:52:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1745983461, now seen corresponding path program 1 times [2022-12-14 10:52:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:15,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188804371] [2022-12-14 10:52:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 10:52:15,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188804371] [2022-12-14 10:52:15,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188804371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:15,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:15,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:52:15,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247408186] [2022-12-14 10:52:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:15,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:52:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:52:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:52:15,602 INFO L87 Difference]: Start difference. First operand 73131 states and 117215 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-14 10:52:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:19,344 INFO L93 Difference]: Finished difference Result 73351 states and 117482 transitions. [2022-12-14 10:52:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:52:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 160 [2022-12-14 10:52:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:19,579 INFO L225 Difference]: With dead ends: 73351 [2022-12-14 10:52:19,580 INFO L226 Difference]: Without dead ends: 73234 [2022-12-14 10:52:19,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:52:19,607 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 247 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:19,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 469 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:52:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73234 states. [2022-12-14 10:52:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73234 to 73227. [2022-12-14 10:52:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73227 states, 54506 states have (on average 1.46756320405093) internal successors, (79991), 54517 states have internal predecessors, (79991), 18670 states have call successors, (18670), 50 states have call predecessors, (18670), 50 states have return successors, (18669), 18665 states have call predecessors, (18669), 18667 states have call successors, (18669) [2022-12-14 10:52:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73227 states to 73227 states and 117330 transitions. [2022-12-14 10:52:24,037 INFO L78 Accepts]: Start accepts. Automaton has 73227 states and 117330 transitions. Word has length 160 [2022-12-14 10:52:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:24,037 INFO L495 AbstractCegarLoop]: Abstraction has 73227 states and 117330 transitions. [2022-12-14 10:52:24,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-14 10:52:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 73227 states and 117330 transitions. [2022-12-14 10:52:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-14 10:52:24,178 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:24,178 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 10:52:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 10:52:24,178 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:52:24,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1966618244, now seen corresponding path program 1 times [2022-12-14 10:52:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:24,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878375611] [2022-12-14 10:52:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 10:52:25,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:25,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878375611] [2022-12-14 10:52:25,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878375611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:52:25,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:52:25,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-14 10:52:25,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002532072] [2022-12-14 10:52:25,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:52:25,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 10:52:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:52:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 10:52:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-12-14 10:52:25,198 INFO L87 Difference]: Start difference. First operand 73227 states and 117330 transitions. Second operand has 23 states, 18 states have (on average 5.055555555555555) internal successors, (91), 20 states have internal predecessors, (91), 13 states have call successors, (32), 3 states have call predecessors, (32), 6 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2022-12-14 10:52:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:32,797 INFO L93 Difference]: Finished difference Result 74187 states and 118693 transitions. [2022-12-14 10:52:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-14 10:52:32,798 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 5.055555555555555) internal successors, (91), 20 states have internal predecessors, (91), 13 states have call successors, (32), 3 states have call predecessors, (32), 6 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) Word has length 168 [2022-12-14 10:52:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:32,998 INFO L225 Difference]: With dead ends: 74187 [2022-12-14 10:52:32,998 INFO L226 Difference]: Without dead ends: 73731 [2022-12-14 10:52:33,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=577, Invalid=3979, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 10:52:33,025 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 827 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 5849 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 6536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 5849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:33,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 3357 Invalid, 6536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 5849 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 10:52:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73731 states. [2022-12-14 10:52:37,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73731 to 73679. [2022-12-14 10:52:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73679 states, 54771 states have (on average 1.4663051614905698) internal successors, (80311), 54792 states have internal predecessors, (80311), 18817 states have call successors, (18817), 85 states have call predecessors, (18817), 90 states have return successors, (18827), 18805 states have call predecessors, (18827), 18809 states have call successors, (18827) [2022-12-14 10:52:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73679 states to 73679 states and 117955 transitions. [2022-12-14 10:52:38,178 INFO L78 Accepts]: Start accepts. Automaton has 73679 states and 117955 transitions. Word has length 168 [2022-12-14 10:52:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:38,179 INFO L495 AbstractCegarLoop]: Abstraction has 73679 states and 117955 transitions. [2022-12-14 10:52:38,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 5.055555555555555) internal successors, (91), 20 states have internal predecessors, (91), 13 states have call successors, (32), 3 states have call predecessors, (32), 6 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2022-12-14 10:52:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 73679 states and 117955 transitions. [2022-12-14 10:52:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-14 10:52:38,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:38,328 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 10:52:38,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:52:38,328 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:52:38,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1279922580, now seen corresponding path program 1 times [2022-12-14 10:52:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:52:38,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644799326] [2022-12-14 10:52:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:52:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 10:52:40,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:52:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644799326] [2022-12-14 10:52:40,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644799326] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:52:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472317635] [2022-12-14 10:52:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:40,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:52:40,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:52:40,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:52:40,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:52:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:41,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-14 10:52:41,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:52:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 10:52:42,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:52:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 10:52:50,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472317635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:52:50,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [903099553] [2022-12-14 10:52:50,134 INFO L159 IcfgInterpreter]: Started Sifa with 123 locations of interest [2022-12-14 10:52:50,134 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:52:50,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:52:50,135 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:52:50,135 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:53:36,264 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 10:53:36,537 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 263 for LOIs [2022-12-14 10:53:39,021 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:53:39,293 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 538 for LOIs [2022-12-14 10:53:48,433 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 248 for LOIs [2022-12-14 10:54:12,162 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 208 for LOIs [2022-12-14 10:54:12,673 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 208 for LOIs [2022-12-14 10:54:12,700 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 208 for LOIs [2022-12-14 10:54:12,729 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 212 for LOIs [2022-12-14 10:54:12,779 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 208 for LOIs [2022-12-14 10:54:12,805 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 208 for LOIs [2022-12-14 10:54:12,831 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 396 for LOIs [2022-12-14 10:54:13,038 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 472 for LOIs [2022-12-14 10:54:14,566 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 208 for LOIs [2022-12-14 10:54:14,593 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 208 for LOIs [2022-12-14 10:54:14,622 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:58:32,498 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 585 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:58:47,432 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 573 DAG size of output: 471 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:00,514 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 575 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:09,245 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 631 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:19,369 WARN L233 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 641 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:52,914 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 577 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:00:01,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1402044#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= ~queued_message~0 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~msg#1| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 2147483648)) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~11#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 2147483647) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 2147483648)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_~receiver~0#1| 2147483648)) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 2147483648)) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~18#1| 2147483647) (<= ~__ste_client_idCounter2~0 3) (= ~__ste_email_body1~0.offset 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~queued_client~0)| 2147483647) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~5#1| 0) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 2147483647) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~18#1| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#1| 2147483648)) (<= 0 (+ ~queued_client~0 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 2147483648)) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 2147483647) (<= ~queue_empty~0 1) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 2147483648)) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 2147483648)) (<= 0 (+ ~queued_message~0 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_#in~msg#1|)) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 |old(~queue_empty~0)|) (= ~__SELECTED_FEATURE_Forward~0 0) (= ~__ste_Client_Keyring0_User0~0 0) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 2147483647) (= ~__ste_email_body0~0.base 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 2147483647) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 2147483647) (= ~__ste_email_id0~0 0) (<= 0 ~queue_empty~0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 2147483647) (= ~__ste_Client_AddressBook2_Address1~0 0) (= ~bob~0 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 2147483647) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= ~__ste_client_outbuffer0~0 0) (<= 0 (+ |old(~queued_client~0)| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~client#1| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_~tmp~12#1| 2147483648)) (= ~__SELECTED_FEATURE_Base~0 0) (<= 0 (+ |old(~queued_message~0)| 2147483648)) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 2147483647) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 2147483647) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 2147483647) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 2147483647) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~21#1| 0) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 2147483648)) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_~msg#1| 2147483648)) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2147483647) (<= |old(~queued_message~0)| 2147483647) (<= |outgoing__wrappee__AutoResponder_~tmp~12#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 2147483648)) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 2147483647) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~queued_client~0 2147483647) (<= |outgoing__wrappee__AutoResponder_~client#1| 2147483647) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_#in~client#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 2147483647) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~5#1|) (= ~__ste_client_autoResponse2~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~11#1| 2147483648)) (= |#NULL.base| 0) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_#in~client#1|)) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 2147483647))' at error location [2022-12-14 11:00:01,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:00:01,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:00:01,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 21, 23] total 83 [2022-12-14 11:00:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9968446] [2022-12-14 11:00:01,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:00:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-12-14 11:00:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:00:01,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-12-14 11:00:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1992, Invalid=34298, Unknown=0, NotChecked=0, Total=36290 [2022-12-14 11:00:01,792 INFO L87 Difference]: Start difference. First operand 73679 states and 117955 transitions. Second operand has 83 states, 64 states have (on average 4.09375) internal successors, (262), 67 states have internal predecessors, (262), 44 states have call successors, (95), 10 states have call predecessors, (95), 21 states have return successors, (91), 52 states have call predecessors, (91), 43 states have call successors, (91) [2022-12-14 11:00:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:45,855 INFO L93 Difference]: Finished difference Result 112237 states and 179042 transitions. [2022-12-14 11:00:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-12-14 11:00:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 64 states have (on average 4.09375) internal successors, (262), 67 states have internal predecessors, (262), 44 states have call successors, (95), 10 states have call predecessors, (95), 21 states have return successors, (91), 52 states have call predecessors, (91), 43 states have call successors, (91) Word has length 173 [2022-12-14 11:00:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:46,176 INFO L225 Difference]: With dead ends: 112237 [2022-12-14 11:00:46,176 INFO L226 Difference]: Without dead ends: 111163 [2022-12-14 11:00:46,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 369 SyntacticMatches, 6 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36956 ImplicationChecksByTransitivity, 364.5s TimeCoverageRelationStatistics Valid=6005, Invalid=98001, Unknown=0, NotChecked=0, Total=104006 [2022-12-14 11:00:46,215 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 3692 mSDsluCounter, 9438 mSDsCounter, 0 mSdLazyCounter, 20926 mSolverCounterSat, 3090 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3739 SdHoareTripleChecker+Valid, 9771 SdHoareTripleChecker+Invalid, 24016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3090 IncrementalHoareTripleChecker+Valid, 20926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:46,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3739 Valid, 9771 Invalid, 24016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3090 Valid, 20926 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-12-14 11:00:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111163 states. [2022-12-14 11:01:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111163 to 110060. [2022-12-14 11:01:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110060 states, 81891 states have (on average 1.4647030809246437) internal successors, (119946), 81937 states have internal predecessors, (119946), 27985 states have call successors, (27985), 171 states have call predecessors, (27985), 183 states have return successors, (28012), 27959 states have call predecessors, (28012), 27969 states have call successors, (28012) [2022-12-14 11:01:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110060 states to 110060 states and 175943 transitions. [2022-12-14 11:01:04,936 INFO L78 Accepts]: Start accepts. Automaton has 110060 states and 175943 transitions. Word has length 173 [2022-12-14 11:01:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:04,937 INFO L495 AbstractCegarLoop]: Abstraction has 110060 states and 175943 transitions. [2022-12-14 11:01:04,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 64 states have (on average 4.09375) internal successors, (262), 67 states have internal predecessors, (262), 44 states have call successors, (95), 10 states have call predecessors, (95), 21 states have return successors, (91), 52 states have call predecessors, (91), 43 states have call successors, (91) [2022-12-14 11:01:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 110060 states and 175943 transitions. [2022-12-14 11:01:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-14 11:01:05,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:05,181 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 11:01:05,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:01:05,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 11:01:05,383 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:01:05,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:05,385 INFO L85 PathProgramCache]: Analyzing trace with hash 848335148, now seen corresponding path program 1 times [2022-12-14 11:01:05,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:01:05,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980978147] [2022-12-14 11:01:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:01:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 11:01:05,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:01:05,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980978147] [2022-12-14 11:01:05,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980978147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:05,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:05,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:01:05,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943462096] [2022-12-14 11:01:05,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:05,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:01:05,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:01:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:01:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:01:05,589 INFO L87 Difference]: Start difference. First operand 110060 states and 175943 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 11:01:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:16,738 INFO L93 Difference]: Finished difference Result 144815 states and 232034 transitions. [2022-12-14 11:01:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:01:16,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 180 [2022-12-14 11:01:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:16,935 INFO L225 Difference]: With dead ends: 144815 [2022-12-14 11:01:16,935 INFO L226 Difference]: Without dead ends: 74566 [2022-12-14 11:01:17,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:01:17,030 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 131 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:17,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 766 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:01:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74566 states. [2022-12-14 11:01:28,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74566 to 74566. [2022-12-14 11:01:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74566 states, 55279 states have (on average 1.4451238264078583) internal successors, (79885), 55325 states have internal predecessors, (79885), 19103 states have call successors, (19103), 171 states have call predecessors, (19103), 183 states have return successors, (19130), 19077 states have call predecessors, (19130), 19087 states have call successors, (19130) [2022-12-14 11:01:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74566 states to 74566 states and 118118 transitions. [2022-12-14 11:01:28,365 INFO L78 Accepts]: Start accepts. Automaton has 74566 states and 118118 transitions. Word has length 180 [2022-12-14 11:01:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:28,366 INFO L495 AbstractCegarLoop]: Abstraction has 74566 states and 118118 transitions. [2022-12-14 11:01:28,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 11:01:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 74566 states and 118118 transitions. [2022-12-14 11:01:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-14 11:01:28,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:28,514 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 11:01:28,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 11:01:28,514 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:01:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash 42790768, now seen corresponding path program 1 times [2022-12-14 11:01:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:01:28,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279964485] [2022-12-14 11:01:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:28,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:01:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 11:01:31,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:01:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279964485] [2022-12-14 11:01:31,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279964485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:01:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248677705] [2022-12-14 11:01:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:31,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:01:31,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:01:31,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:01:31,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9febe4-9c46-420e-9a9d-63e1cd12b085/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:01:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:31,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 153 conjunts are in the unsatisfiable core [2022-12-14 11:01:31,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:01:33,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:01:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-14 11:01:37,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248677705] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:01:37,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1101061405] [2022-12-14 11:01:37,561 INFO L159 IcfgInterpreter]: Started Sifa with 126 locations of interest [2022-12-14 11:01:37,561 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:01:37,561 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:01:37,561 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:01:37,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs