./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/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_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/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_b08b079b-a314-49bf-b0c9-2068b452f51a/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 7d58750164873693a8e41f270259eb299f067753793be4bdf6f5449bb7376f85 --- 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 10:51:08,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:51:08,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:51:08,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:51:08,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:51:08,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:51:08,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:51:08,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:51:08,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:51:08,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:51:08,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:51:08,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:51:08,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:51:08,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:51:08,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:51:08,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:51:08,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:51:08,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:51:08,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:51:08,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:51:08,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:51:08,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:51:08,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:51:08,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:51:08,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:51:08,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:51:08,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:51:08,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:51:08,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:51:08,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:51:08,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:51:08,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:51:08,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:51:08,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:51:08,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:51:08,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:51:08,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:51:08,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:51:08,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:51:08,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:51:08,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:51:08,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:51:08,562 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:51:08,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:51:08,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:51:08,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:51:08,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:51:08,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:51:08,563 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:51:08,564 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:51:08,564 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:51:08,564 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:51:08,564 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:51:08,564 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:51:08,564 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:51:08,564 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:51:08,564 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:51:08,565 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:51:08,565 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:51:08,565 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:51:08,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:51:08,566 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:51:08,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:51:08,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:51:08,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:51:08,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:51:08,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:51:08,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:51:08,567 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:51:08,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:51:08,567 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:51:08,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:51:08,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:51:08,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:51:08,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:51:08,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:51:08,568 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:51:08,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:51:08,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:51:08,568 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:51:08,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:51:08,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:51:08,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:51:08,569 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_b08b079b-a314-49bf-b0c9-2068b452f51a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d58750164873693a8e41f270259eb299f067753793be4bdf6f5449bb7376f85 [2022-12-14 10:51:08,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:51:08,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:51:08,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:51:08,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:51:08,743 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:51:08,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product33.cil.c [2022-12-14 10:51:11,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:51:11,542 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:51:11,542 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/sv-benchmarks/c/product-lines/email_spec4_product33.cil.c [2022-12-14 10:51:11,557 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/data/3cbcb7fac/a38f755a394f4807b7f45ac782537d7e/FLAGcc8ba377f [2022-12-14 10:51:11,854 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/data/3cbcb7fac/a38f755a394f4807b7f45ac782537d7e [2022-12-14 10:51:11,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:51:11,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:51:11,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:51:11,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:51:11,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:51:11,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:51:11" (1/1) ... [2022-12-14 10:51:11,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586f16c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:11, skipping insertion in model container [2022-12-14 10:51:11,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:51:11" (1/1) ... [2022-12-14 10:51:11,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:51:11,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:51:12,074 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_b08b079b-a314-49bf-b0c9-2068b452f51a/sv-benchmarks/c/product-lines/email_spec4_product33.cil.c[11229,11242] [2022-12-14 10:51:12,148 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,150 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,154 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,218 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,224 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,239 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,241 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,328 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:51:12,355 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:51:12,374 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_b08b079b-a314-49bf-b0c9-2068b452f51a/sv-benchmarks/c/product-lines/email_spec4_product33.cil.c[11229,11242] [2022-12-14 10:51:12,376 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,377 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,379 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,385 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,386 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,390 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,390 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,410 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:51:12,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:51:12,435 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:51:12,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12 WrapperNode [2022-12-14 10:51:12,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:51:12,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:51:12,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:51:12,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:51:12,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,488 INFO L138 Inliner]: procedures = 134, calls = 228, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1070 [2022-12-14 10:51:12,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:51:12,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:51:12,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:51:12,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:51:12,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:51:12,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:51:12,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:51:12,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:51:12,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (1/1) ... [2022-12-14 10:51:12,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:51:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:51:12,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:51:12,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:51:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 10:51:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 10:51:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 10:51:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 10:51:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 10:51:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 10:51:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 10:51:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 10:51:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 10:51:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 10:51:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 10:51:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 10:51:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 10:51:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 10:51:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 10:51:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 10:51:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 10:51:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 10:51:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 10:51:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 10:51:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 10:51:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 10:51:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 10:51:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 10:51:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 10:51:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 10:51:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 10:51:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:51:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 10:51:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 10:51:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 10:51:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 10:51:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 10:51:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 10:51:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 10:51:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 10:51:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 10:51:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 10:51:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 10:51:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 10:51:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 10:51:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 10:51:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 10:51:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 10:51:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 10:51:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 10:51:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 10:51:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 10:51:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:51:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 10:51:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 10:51:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:51:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:51:12,731 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:51:12,733 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:51:13,237 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:51:13,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:51:13,487 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:51:13,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:51:13 BoogieIcfgContainer [2022-12-14 10:51:13,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:51:13,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:51:13,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:51:13,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:51:13,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:51:11" (1/3) ... [2022-12-14 10:51:13,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1358c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:51:13, skipping insertion in model container [2022-12-14 10:51:13,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:51:12" (2/3) ... [2022-12-14 10:51:13,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1358c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:51:13, skipping insertion in model container [2022-12-14 10:51:13,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:51:13" (3/3) ... [2022-12-14 10:51:13,495 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product33.cil.c [2022-12-14 10:51:13,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:51:13,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:51:13,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:51:13,552 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;@1eb70ee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:51:13,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:51:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-12-14 10:51:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 10:51:13,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:13,565 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] [2022-12-14 10:51:13,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash 606239457, now seen corresponding path program 1 times [2022-12-14 10:51:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:13,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579686158] [2022-12-14 10:51:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:13,815 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 10:51:13,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:13,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579686158] [2022-12-14 10:51:13,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579686158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:13,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:13,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:51:13,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861410950] [2022-12-14 10:51:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:13,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:51:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:13,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:51:13,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:51:13,847 INFO L87 Difference]: Start difference. First operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:51:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:13,977 INFO L93 Difference]: Finished difference Result 341 states and 452 transitions. [2022-12-14 10:51:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:51:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2022-12-14 10:51:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:13,987 INFO L225 Difference]: With dead ends: 341 [2022-12-14 10:51:13,988 INFO L226 Difference]: Without dead ends: 209 [2022-12-14 10:51:13,991 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 10:51:13,993 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:13,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-12-14 10:51:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-12-14 10:51:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 121 states have (on average 1.28099173553719) internal successors, (155), 124 states have internal predecessors, (155), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-12-14 10:51:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2022-12-14 10:51:14,034 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 68 [2022-12-14 10:51:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:14,035 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2022-12-14 10:51:14,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:51:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2022-12-14 10:51:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:51:14,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:14,038 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] [2022-12-14 10:51:14,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:51:14,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1100226104, now seen corresponding path program 1 times [2022-12-14 10:51:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:14,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307476199] [2022-12-14 10:51:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:14,159 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 10:51:14,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307476199] [2022-12-14 10:51:14,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307476199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:14,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:14,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972139472] [2022-12-14 10:51:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:14,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:14,163 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:51:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:14,265 INFO L93 Difference]: Finished difference Result 337 states and 440 transitions. [2022-12-14 10:51:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:14,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-12-14 10:51:14,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:14,268 INFO L225 Difference]: With dead ends: 337 [2022-12-14 10:51:14,268 INFO L226 Difference]: Without dead ends: 211 [2022-12-14 10:51:14,269 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 10:51:14,270 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:14,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-14 10:51:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-12-14 10:51:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 126 states have internal predecessors, (157), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-12-14 10:51:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2022-12-14 10:51:14,307 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 69 [2022-12-14 10:51:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:14,307 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2022-12-14 10:51:14,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:51:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2022-12-14 10:51:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:51:14,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:14,311 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] [2022-12-14 10:51:14,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:51:14,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1818867570, now seen corresponding path program 1 times [2022-12-14 10:51:14,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:14,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992345173] [2022-12-14 10:51:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:14,422 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 10:51:14,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:14,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992345173] [2022-12-14 10:51:14,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992345173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:14,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:14,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:51:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529961141] [2022-12-14 10:51:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:14,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:51:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:51:14,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:51:14,425 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:51:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:14,530 INFO L93 Difference]: Finished difference Result 452 states and 623 transitions. [2022-12-14 10:51:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:51:14,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-12-14 10:51:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:14,533 INFO L225 Difference]: With dead ends: 452 [2022-12-14 10:51:14,533 INFO L226 Difference]: Without dead ends: 259 [2022-12-14 10:51:14,534 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 10:51:14,535 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 57 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:14,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 499 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-12-14 10:51:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2022-12-14 10:51:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 155 states have (on average 1.3548387096774193) internal successors, (210), 158 states have internal predecessors, (210), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-14 10:51:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2022-12-14 10:51:14,559 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 74 [2022-12-14 10:51:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:14,560 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2022-12-14 10:51:14,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:51:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2022-12-14 10:51:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 10:51:14,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:14,563 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] [2022-12-14 10:51:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:51:14,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:51:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1883773819, now seen corresponding path program 1 times [2022-12-14 10:51:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:51:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303210351] [2022-12-14 10:51:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:51:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:14,731 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 10:51:14,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:51:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303210351] [2022-12-14 10:51:14,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303210351] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:51:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881040032] [2022-12-14 10:51:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:14,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:51:14,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:51:14,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:51:14,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:51:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:14,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:51:14,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:15,010 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 10:51:15,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:15,069 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 10:51:15,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881040032] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:15,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [535423855] [2022-12-14 10:51:15,090 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 10:51:15,090 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:51:15,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:51:15,098 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:51:15,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:51:47,935 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:51:48,224 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:51:48,529 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 476 for LOIs [2022-12-14 10:52:21,502 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 446 for LOIs [2022-12-14 10:52:21,774 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 474 for LOIs [2022-12-14 10:52:45,040 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 435 for LOIs [2022-12-14 10:52:45,280 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2022-12-14 10:52:45,346 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 253 for LOIs [2022-12-14 10:52:45,388 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-12-14 10:52:45,963 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 250 for LOIs [2022-12-14 10:52:46,002 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:53:29,384 WARN L233 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 585 DAG size of output: 437 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:55:05,693 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3602#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__ste_client_privateKey0~0 |outgoing___utac_acc__SignForward_spec__1_~tmp~25#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing_outgoing__wrappee__Keys_~msg#1|) (<= |outgoing_outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~client#1|) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 1 |outgoing_mail_#in~client#1|) (<= |outgoing_mail_#in~msg#1| 1) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 1 |outgoing_sign_~client#1|) (<= 1 |outgoing_mail_~msg#1|) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 1) (<= |outgoing_sign_~privkey~1#1| 2147483647) (= ~__ste_client_name2~0.offset 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_client_name1~0.base 0) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_client_autoResponse1~0) (= ~__SELECTED_FEATURE_Verify~0 0) (<= |outgoing_getClientId_~retValue_acc~27#1| 2147483647) (= ~__ste_Client_Keyring1_User0~0 0) (= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= |outgoing_sign_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~client#1|) (<= |outgoing_sign_~client#1| 1) (= ~__ste_ClientKeyring_size1~0 0) (= |old(~__ste_email_signKey0~0)| 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= 0 (+ |outgoing_getClientId_~retValue_acc~27#1| 2147483648)) (<= 0 |outgoing_outgoing__wrappee__AutoResponder_~tmp___0~3#1|) (<= |outgoing_getClientId_#res#1| 2147483647) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~16#1|)) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 1) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= |outgoing_#in~msg#1| 1) (<= 1 |outgoing_outgoing__wrappee__Keys_~client#1|) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= |old(~queue_empty~0)| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= |old(~__ste_email_from0~0)| 0) (<= |outgoing_sign_#in~client#1| 1) (<= |outgoing_sign_~tmp~16#1| 2147483647) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing_getClientId_~handle#1|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1|) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= |old(~__ste_email_isSigned0~0)| 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= 1 |outgoing_mail_#in~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~msg#1|) (<= 2 |outgoing_outgoing__wrappee__AutoResponder_~tmp~9#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~client#1|) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 1) (<= 1 |outgoing_mail_~__utac__ad__arg1~0#1|) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (<= 0 |outgoing___utac_acc__SignForward_spec__1_~tmp___0~9#1|) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~25#1| 0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp~9#1| 2) (<= 0 ~__ste_email_isSignatureVerified1~0) (= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_client_outbuffer0~0 0) (<= |outgoing_outgoing__wrappee__Keys_~client#1| 1) (<= 789 ~__ste_client_privateKey2~0) (<= 1 |outgoing_sign_#in~client#1|) (<= |outgoing_getClientId_#in~handle#1| 1) (<= 1 |outgoing_sign_~msg#1|) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp___0~3#1| 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_mail_~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (= |outgoing_outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= |old(~queued_message~0)| 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= |outgoing_mail_~msg#1| 1) (= |old(~queued_client~0)| 0) (not (= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~9#1| 0)) (<= ~__ste_email_encryptionKey0~0 0) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing_mail_#in~client#1| 1) (<= |outgoing_outgoing__wrappee__Keys_#in~client#1| 1) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (<= 2 |outgoing_outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~9#1| 1) (= |#NULL.offset| 0) (<= |outgoing_sign_#in~msg#1| 1) (<= |old(~__ste_email_isSigned1~0)| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing_#in~client#1| 1) (<= 0 (+ |outgoing_sign_~privkey~1#1| 2147483648)) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= |outgoing_~msg#1| 1) (<= |outgoing_outgoing__wrappee__AutoResponder_~client#1| 1) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= |outgoing_outgoing__wrappee__Keys_~msg#1| 1) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 1) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~tmp~8#1| 2147483648)) (= |old(~__ste_email_isEncrypted1~0)| 0) (<= 1 |outgoing_getClientId_#in~handle#1|) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= |outgoing_getClientId_~handle#1| 1) (<= 1 |outgoing_sign_#in~msg#1|) (<= 1 |outgoing_#in~client#1|) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~msg#1|) (<= |outgoing_~client#1| 1) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing_mail_~__utac__ad__arg2~0#1|) (= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~client#1|) (<= ~bob~0 1) (<= 0 |old(~__ste_email_isSigned1~0)|) (<= |old(~__ste_email_signKey1~0)| 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing_mail_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |old(~__ste_email_signKey1~0)|) (<= |outgoing_outgoing__wrappee__Keys_~tmp~8#1| 2147483647) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing_outgoing__wrappee__Keys_#in~msg#1| 1) (<= ~queued_client~0 0))' at error location [2022-12-14 10:55:05,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:05,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:55:05,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 10:55:05,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740909903] [2022-12-14 10:55:05,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:05,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:55:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:55:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=3602, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 10:55:05,696 INFO L87 Difference]: Start difference. First operand 254 states and 357 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 10:55:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:05,930 INFO L93 Difference]: Finished difference Result 630 states and 942 transitions. [2022-12-14 10:55:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:55:05,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 75 [2022-12-14 10:55:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:05,934 INFO L225 Difference]: With dead ends: 630 [2022-12-14 10:55:05,934 INFO L226 Difference]: Without dead ends: 504 [2022-12-14 10:55:05,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 139.6s TimeCoverageRelationStatistics Valid=180, Invalid=3602, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 10:55:05,938 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 208 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:05,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1124 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:55:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-12-14 10:55:05,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 489. [2022-12-14 10:55:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 326 states have (on average 1.49079754601227) internal successors, (486), 329 states have internal predecessors, (486), 138 states have call successors, (138), 24 states have call predecessors, (138), 24 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2022-12-14 10:55:05,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 761 transitions. [2022-12-14 10:55:05,964 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 761 transitions. Word has length 75 [2022-12-14 10:55:05,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:05,964 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 761 transitions. [2022-12-14 10:55:05,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 10:55:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 761 transitions. [2022-12-14 10:55:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 10:55:05,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:05,967 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] [2022-12-14 10:55:05,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:55:06,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:06,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1045281981, now seen corresponding path program 1 times [2022-12-14 10:55:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:06,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854765867] [2022-12-14 10:55:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:06,339 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 10:55:06,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:06,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854765867] [2022-12-14 10:55:06,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854765867] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:06,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:06,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:06,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98994063] [2022-12-14 10:55:06,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:06,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:06,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:06,342 INFO L87 Difference]: Start difference. First operand 489 states and 761 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:06,449 INFO L93 Difference]: Finished difference Result 1183 states and 1880 transitions. [2022-12-14 10:55:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:06,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 81 [2022-12-14 10:55:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:06,454 INFO L225 Difference]: With dead ends: 1183 [2022-12-14 10:55:06,455 INFO L226 Difference]: Without dead ends: 726 [2022-12-14 10:55:06,457 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 10:55:06,457 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 55 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:06,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 500 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:06,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-12-14 10:55:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 721. [2022-12-14 10:55:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 494 states have (on average 1.5161943319838056) internal successors, (749), 497 states have internal predecessors, (749), 202 states have call successors, (202), 24 states have call predecessors, (202), 24 states have return successors, (201), 201 states have call predecessors, (201), 201 states have call successors, (201) [2022-12-14 10:55:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1152 transitions. [2022-12-14 10:55:06,496 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1152 transitions. Word has length 81 [2022-12-14 10:55:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:06,496 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 1152 transitions. [2022-12-14 10:55:06,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1152 transitions. [2022-12-14 10:55:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 10:55:06,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:06,500 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] [2022-12-14 10:55:06,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:55:06,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash -428921095, now seen corresponding path program 1 times [2022-12-14 10:55:06,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:06,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828947334] [2022-12-14 10:55:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:06,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:06,579 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 10:55:06,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:06,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828947334] [2022-12-14 10:55:06,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828947334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:06,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:06,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:06,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212414782] [2022-12-14 10:55:06,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:06,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:06,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:06,582 INFO L87 Difference]: Start difference. First operand 721 states and 1152 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:06,698 INFO L93 Difference]: Finished difference Result 1740 states and 2823 transitions. [2022-12-14 10:55:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2022-12-14 10:55:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:06,702 INFO L225 Difference]: With dead ends: 1740 [2022-12-14 10:55:06,702 INFO L226 Difference]: Without dead ends: 1081 [2022-12-14 10:55:06,704 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 10:55:06,704 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 53 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 491 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 10:55:06,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 491 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-12-14 10:55:06,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1076. [2022-12-14 10:55:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 754 states have (on average 1.5291777188328912) internal successors, (1153), 757 states have internal predecessors, (1153), 297 states have call successors, (297), 24 states have call predecessors, (297), 24 states have return successors, (296), 296 states have call predecessors, (296), 296 states have call successors, (296) [2022-12-14 10:55:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1746 transitions. [2022-12-14 10:55:06,748 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1746 transitions. Word has length 82 [2022-12-14 10:55:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:06,748 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1746 transitions. [2022-12-14 10:55:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1746 transitions. [2022-12-14 10:55:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 10:55:06,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:06,752 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] [2022-12-14 10:55:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:55:06,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1624341073, now seen corresponding path program 1 times [2022-12-14 10:55:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:06,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113086586] [2022-12-14 10:55:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:06,806 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 10:55:06,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:06,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113086586] [2022-12-14 10:55:06,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113086586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:06,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:06,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708823587] [2022-12-14 10:55:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:06,808 INFO L87 Difference]: Start difference. First operand 1076 states and 1746 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:06,944 INFO L93 Difference]: Finished difference Result 2538 states and 4167 transitions. [2022-12-14 10:55:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 83 [2022-12-14 10:55:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:06,952 INFO L225 Difference]: With dead ends: 2538 [2022-12-14 10:55:06,952 INFO L226 Difference]: Without dead ends: 1604 [2022-12-14 10:55:06,954 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 10:55:06,955 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 51 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:06,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 484 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-12-14 10:55:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1599. [2022-12-14 10:55:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1154 states have (on average 1.5381282495667243) internal successors, (1775), 1157 states have internal predecessors, (1775), 420 states have call successors, (420), 24 states have call predecessors, (420), 24 states have return successors, (419), 419 states have call predecessors, (419), 419 states have call successors, (419) [2022-12-14 10:55:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2614 transitions. [2022-12-14 10:55:07,023 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2614 transitions. Word has length 83 [2022-12-14 10:55:07,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:07,023 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2614 transitions. [2022-12-14 10:55:07,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2614 transitions. [2022-12-14 10:55:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 10:55:07,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:07,027 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] [2022-12-14 10:55:07,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:55:07,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1229349350, now seen corresponding path program 1 times [2022-12-14 10:55:07,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:07,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730569827] [2022-12-14 10:55:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:07,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:07,094 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 10:55:07,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:07,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730569827] [2022-12-14 10:55:07,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730569827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:07,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:07,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215738546] [2022-12-14 10:55:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:07,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:07,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:07,096 INFO L87 Difference]: Start difference. First operand 1599 states and 2614 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:07,277 INFO L93 Difference]: Finished difference Result 3748 states and 6195 transitions. [2022-12-14 10:55:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:07,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 84 [2022-12-14 10:55:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:07,289 INFO L225 Difference]: With dead ends: 3748 [2022-12-14 10:55:07,289 INFO L226 Difference]: Without dead ends: 2428 [2022-12-14 10:55:07,293 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 10:55:07,293 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 49 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:07,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 484 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-12-14 10:55:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2423. [2022-12-14 10:55:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 1799 states have (on average 1.5436353529738744) internal successors, (2777), 1802 states have internal predecessors, (2777), 599 states have call successors, (599), 24 states have call predecessors, (599), 24 states have return successors, (598), 598 states have call predecessors, (598), 598 states have call successors, (598) [2022-12-14 10:55:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3974 transitions. [2022-12-14 10:55:07,442 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3974 transitions. Word has length 84 [2022-12-14 10:55:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:07,443 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 3974 transitions. [2022-12-14 10:55:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3974 transitions. [2022-12-14 10:55:07,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 10:55:07,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:07,453 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] [2022-12-14 10:55:07,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:55:07,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1535092339, now seen corresponding path program 1 times [2022-12-14 10:55:07,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:07,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874279430] [2022-12-14 10:55:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:07,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:07,499 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 10:55:07,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:07,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874279430] [2022-12-14 10:55:07,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874279430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:07,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:07,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:07,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882591124] [2022-12-14 10:55:07,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:07,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:07,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:07,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:07,501 INFO L87 Difference]: Start difference. First operand 2423 states and 3974 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:07,750 INFO L93 Difference]: Finished difference Result 5959 states and 9867 transitions. [2022-12-14 10:55:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:07,750 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 85 [2022-12-14 10:55:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:07,769 INFO L225 Difference]: With dead ends: 5959 [2022-12-14 10:55:07,769 INFO L226 Difference]: Without dead ends: 3958 [2022-12-14 10:55:07,775 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 10:55:07,776 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 47 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 502 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 10:55:07,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 502 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2022-12-14 10:55:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3953. [2022-12-14 10:55:07,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 2953 states have (on average 1.5347104639349813) internal successors, (4532), 2956 states have internal predecessors, (4532), 975 states have call successors, (975), 24 states have call predecessors, (975), 24 states have return successors, (974), 974 states have call predecessors, (974), 974 states have call successors, (974) [2022-12-14 10:55:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 6481 transitions. [2022-12-14 10:55:08,002 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 6481 transitions. Word has length 85 [2022-12-14 10:55:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:08,002 INFO L495 AbstractCegarLoop]: Abstraction has 3953 states and 6481 transitions. [2022-12-14 10:55:08,002 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 6481 transitions. [2022-12-14 10:55:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 10:55:08,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:08,017 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] [2022-12-14 10:55:08,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:55:08,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1657572642, now seen corresponding path program 1 times [2022-12-14 10:55:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:08,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780520155] [2022-12-14 10:55:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:08,068 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 10:55:08,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:08,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780520155] [2022-12-14 10:55:08,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780520155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:08,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:08,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:08,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141892813] [2022-12-14 10:55:08,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:08,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:08,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:08,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:08,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:08,070 INFO L87 Difference]: Start difference. First operand 3953 states and 6481 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:08,379 INFO L93 Difference]: Finished difference Result 9820 states and 16264 transitions. [2022-12-14 10:55:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:08,379 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2022-12-14 10:55:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:08,400 INFO L225 Difference]: With dead ends: 9820 [2022-12-14 10:55:08,400 INFO L226 Difference]: Without dead ends: 6555 [2022-12-14 10:55:08,408 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 10:55:08,408 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 45 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:08,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 490 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6555 states. [2022-12-14 10:55:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6555 to 6550. [2022-12-14 10:55:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6550 states, 4944 states have (on average 1.5317556634304208) internal successors, (7573), 4947 states have internal predecessors, (7573), 1581 states have call successors, (1581), 24 states have call predecessors, (1581), 24 states have return successors, (1580), 1580 states have call predecessors, (1580), 1580 states have call successors, (1580) [2022-12-14 10:55:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6550 states to 6550 states and 10734 transitions. [2022-12-14 10:55:08,773 INFO L78 Accepts]: Start accepts. Automaton has 6550 states and 10734 transitions. Word has length 86 [2022-12-14 10:55:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:08,773 INFO L495 AbstractCegarLoop]: Abstraction has 6550 states and 10734 transitions. [2022-12-14 10:55:08,773 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6550 states and 10734 transitions. [2022-12-14 10:55:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 10:55:08,782 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:08,782 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] [2022-12-14 10:55:08,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:55:08,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 385719035, now seen corresponding path program 1 times [2022-12-14 10:55:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:08,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009320686] [2022-12-14 10:55:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:08,828 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 10:55:08,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009320686] [2022-12-14 10:55:08,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009320686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:08,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:08,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291144991] [2022-12-14 10:55:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:08,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:08,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:08,830 INFO L87 Difference]: Start difference. First operand 6550 states and 10734 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:09,349 INFO L93 Difference]: Finished difference Result 17072 states and 28182 transitions. [2022-12-14 10:55:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:09,350 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2022-12-14 10:55:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:09,389 INFO L225 Difference]: With dead ends: 17072 [2022-12-14 10:55:09,390 INFO L226 Difference]: Without dead ends: 11499 [2022-12-14 10:55:09,400 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 10:55:09,401 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, 58 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 10:55:09,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 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 10:55:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11499 states. [2022-12-14 10:55:09,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11499 to 11494. [2022-12-14 10:55:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11494 states, 8685 states have (on average 1.5191709844559584) internal successors, (13194), 8688 states have internal predecessors, (13194), 2784 states have call successors, (2784), 24 states have call predecessors, (2784), 24 states have return successors, (2783), 2783 states have call predecessors, (2783), 2783 states have call successors, (2783) [2022-12-14 10:55:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11494 states to 11494 states and 18761 transitions. [2022-12-14 10:55:09,999 INFO L78 Accepts]: Start accepts. Automaton has 11494 states and 18761 transitions. Word has length 87 [2022-12-14 10:55:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:10,000 INFO L495 AbstractCegarLoop]: Abstraction has 11494 states and 18761 transitions. [2022-12-14 10:55:10,000 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:10,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11494 states and 18761 transitions. [2022-12-14 10:55:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 10:55:10,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:10,013 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 10:55:10,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:55:10,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash 622506783, now seen corresponding path program 1 times [2022-12-14 10:55:10,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:10,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942841540] [2022-12-14 10:55:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:10,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:10,063 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 10:55:10,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:10,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942841540] [2022-12-14 10:55:10,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942841540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:10,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:10,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128945347] [2022-12-14 10:55:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:10,064 INFO L87 Difference]: Start difference. First operand 11494 states and 18761 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:10,976 INFO L93 Difference]: Finished difference Result 30391 states and 49948 transitions. [2022-12-14 10:55:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:10,977 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2022-12-14 10:55:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:11,037 INFO L225 Difference]: With dead ends: 30391 [2022-12-14 10:55:11,037 INFO L226 Difference]: Without dead ends: 20326 [2022-12-14 10:55:11,061 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 10:55:11,061 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 41 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 489 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20326 states. [2022-12-14 10:55:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20326 to 20321. [2022-12-14 10:55:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20321 states, 15473 states have (on average 1.511859367931235) internal successors, (23393), 15476 states have internal predecessors, (23393), 4823 states have call successors, (4823), 24 states have call predecessors, (4823), 24 states have return successors, (4822), 4822 states have call predecessors, (4822), 4822 states have call successors, (4822) [2022-12-14 10:55:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20321 states to 20321 states and 33038 transitions. [2022-12-14 10:55:12,049 INFO L78 Accepts]: Start accepts. Automaton has 20321 states and 33038 transitions. Word has length 88 [2022-12-14 10:55:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:12,049 INFO L495 AbstractCegarLoop]: Abstraction has 20321 states and 33038 transitions. [2022-12-14 10:55:12,049 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 20321 states and 33038 transitions. [2022-12-14 10:55:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 10:55:12,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:12,068 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 10:55:12,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:55:12,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1745018403, now seen corresponding path program 1 times [2022-12-14 10:55:12,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:12,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291519891] [2022-12-14 10:55:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:12,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:12,119 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 10:55:12,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:12,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291519891] [2022-12-14 10:55:12,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291519891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:12,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:12,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724568919] [2022-12-14 10:55:12,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:12,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:12,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:12,121 INFO L87 Difference]: Start difference. First operand 20321 states and 33038 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:13,937 INFO L93 Difference]: Finished difference Result 55103 states and 90040 transitions. [2022-12-14 10:55:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:13,938 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2022-12-14 10:55:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:14,027 INFO L225 Difference]: With dead ends: 55103 [2022-12-14 10:55:14,027 INFO L226 Difference]: Without dead ends: 36766 [2022-12-14 10:55:14,064 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 10:55:14,064 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 39 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:14,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 489 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36766 states. [2022-12-14 10:55:15,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36766 to 36761. [2022-12-14 10:55:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36761 states, 28198 states have (on average 1.5014185403220086) internal successors, (42337), 28201 states have internal predecessors, (42337), 8538 states have call successors, (8538), 24 states have call predecessors, (8538), 24 states have return successors, (8537), 8537 states have call predecessors, (8537), 8537 states have call successors, (8537) [2022-12-14 10:55:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36761 states to 36761 states and 59412 transitions. [2022-12-14 10:55:15,648 INFO L78 Accepts]: Start accepts. Automaton has 36761 states and 59412 transitions. Word has length 89 [2022-12-14 10:55:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:15,648 INFO L495 AbstractCegarLoop]: Abstraction has 36761 states and 59412 transitions. [2022-12-14 10:55:15,649 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 36761 states and 59412 transitions. [2022-12-14 10:55:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 10:55:15,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:15,662 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 10:55:15,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:55:15,662 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:15,663 INFO L85 PathProgramCache]: Analyzing trace with hash 811776319, now seen corresponding path program 1 times [2022-12-14 10:55:15,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:15,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519339427] [2022-12-14 10:55:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:15,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:15,708 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 10:55:15,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:15,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519339427] [2022-12-14 10:55:15,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519339427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:15,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:15,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:55:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105267329] [2022-12-14 10:55:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:15,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:55:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:55:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:55:15,710 INFO L87 Difference]: Start difference. First operand 36761 states and 59412 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:18,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:18,741 INFO L93 Difference]: Finished difference Result 67720 states and 109621 transitions. [2022-12-14 10:55:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:55:18,741 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2022-12-14 10:55:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:18,902 INFO L225 Difference]: With dead ends: 67720 [2022-12-14 10:55:18,902 INFO L226 Difference]: Without dead ends: 67594 [2022-12-14 10:55:18,923 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 10:55:18,924 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 37 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:18,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 489 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2022-12-14 10:55:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 67589. [2022-12-14 10:55:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67589 states, 52227 states have (on average 1.48760219809677) internal successors, (77693), 52230 states have internal predecessors, (77693), 15337 states have call successors, (15337), 24 states have call predecessors, (15337), 24 states have return successors, (15336), 15336 states have call predecessors, (15336), 15336 states have call successors, (15336) [2022-12-14 10:55:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 108366 transitions. [2022-12-14 10:55:23,060 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 108366 transitions. Word has length 90 [2022-12-14 10:55:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:23,060 INFO L495 AbstractCegarLoop]: Abstraction has 67589 states and 108366 transitions. [2022-12-14 10:55:23,060 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:55:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 108366 transitions. [2022-12-14 10:55:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 10:55:23,074 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:23,075 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 10:55:23,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:55:23,075 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:23,075 INFO L85 PathProgramCache]: Analyzing trace with hash 863173916, now seen corresponding path program 1 times [2022-12-14 10:55:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:23,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31359618] [2022-12-14 10:55:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:24,063 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 10:55:24,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:24,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31359618] [2022-12-14 10:55:24,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31359618] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:24,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:24,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-14 10:55:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576736089] [2022-12-14 10:55:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:24,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 10:55:24,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:24,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 10:55:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-12-14 10:55:24,066 INFO L87 Difference]: Start difference. First operand 67589 states and 108366 transitions. Second operand has 20 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 10:55:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:28,718 INFO L93 Difference]: Finished difference Result 67799 states and 108680 transitions. [2022-12-14 10:55:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 10:55:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 91 [2022-12-14 10:55:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:28,903 INFO L225 Difference]: With dead ends: 67799 [2022-12-14 10:55:28,904 INFO L226 Difference]: Without dead ends: 67675 [2022-12-14 10:55:28,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 10:55:28,928 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 552 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:28,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 3212 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 10:55:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67675 states. [2022-12-14 10:55:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67675 to 67614. [2022-12-14 10:55:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67614 states, 52241 states have (on average 1.4874715261958997) internal successors, (77707), 52244 states have internal predecessors, (77707), 15345 states have call successors, (15345), 28 states have call predecessors, (15345), 27 states have return successors, (15344), 15344 states have call predecessors, (15344), 15344 states have call successors, (15344) [2022-12-14 10:55:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67614 states to 67614 states and 108396 transitions. [2022-12-14 10:55:33,199 INFO L78 Accepts]: Start accepts. Automaton has 67614 states and 108396 transitions. Word has length 91 [2022-12-14 10:55:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:33,199 INFO L495 AbstractCegarLoop]: Abstraction has 67614 states and 108396 transitions. [2022-12-14 10:55:33,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 10:55:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 67614 states and 108396 transitions. [2022-12-14 10:55:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 10:55:33,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:33,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:33,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:55:33,295 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:33,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1329325099, now seen corresponding path program 1 times [2022-12-14 10:55:33,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:33,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715337105] [2022-12-14 10:55:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:33,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 10:55:33,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715337105] [2022-12-14 10:55:33,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715337105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:33,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:33,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:55:33,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640247169] [2022-12-14 10:55:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:33,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:55:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:55:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:55:33,493 INFO L87 Difference]: Start difference. First operand 67614 states and 108396 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-14 10:55:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:37,485 INFO L93 Difference]: Finished difference Result 67704 states and 108485 transitions. [2022-12-14 10:55:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:55:37,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 146 [2022-12-14 10:55:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:37,652 INFO L225 Difference]: With dead ends: 67704 [2022-12-14 10:55:37,652 INFO L226 Difference]: Without dead ends: 67662 [2022-12-14 10:55:37,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 10:55:37,672 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 214 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:37,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 479 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:55:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67662 states. [2022-12-14 10:55:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67662 to 67659. [2022-12-14 10:55:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67659 states, 52264 states have (on average 1.4872570029083116) internal successors, (77730), 52268 states have internal predecessors, (77730), 15354 states have call successors, (15354), 41 states have call predecessors, (15354), 40 states have return successors, (15353), 15352 states have call predecessors, (15353), 15353 states have call successors, (15353) [2022-12-14 10:55:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67659 states to 67659 states and 108437 transitions. [2022-12-14 10:55:41,724 INFO L78 Accepts]: Start accepts. Automaton has 67659 states and 108437 transitions. Word has length 146 [2022-12-14 10:55:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:41,725 INFO L495 AbstractCegarLoop]: Abstraction has 67659 states and 108437 transitions. [2022-12-14 10:55:41,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-14 10:55:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 67659 states and 108437 transitions. [2022-12-14 10:55:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 10:55:41,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:41,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:41,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 10:55:41,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -744070611, now seen corresponding path program 1 times [2022-12-14 10:55:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64729521] [2022-12-14 10:55:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 10:55:42,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:42,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64729521] [2022-12-14 10:55:42,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64729521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:42,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:42,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 10:55:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459865111] [2022-12-14 10:55:42,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:42,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 10:55:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 10:55:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:55:42,681 INFO L87 Difference]: Start difference. First operand 67659 states and 108437 transitions. Second operand has 21 states, 16 states have (on average 5.375) internal successors, (86), 18 states have internal predecessors, (86), 12 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2022-12-14 10:55:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:48,257 INFO L93 Difference]: Finished difference Result 67926 states and 108757 transitions. [2022-12-14 10:55:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 10:55:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 5.375) internal successors, (86), 18 states have internal predecessors, (86), 12 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) Word has length 157 [2022-12-14 10:55:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:48,425 INFO L225 Difference]: With dead ends: 67926 [2022-12-14 10:55:48,425 INFO L226 Difference]: Without dead ends: 67840 [2022-12-14 10:55:48,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=1601, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 10:55:48,446 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 765 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 3626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:48,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1606 Invalid, 3626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:55:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67840 states. [2022-12-14 10:55:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67840 to 67748. [2022-12-14 10:55:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67748 states, 52315 states have (on average 1.4869157985281467) internal successors, (77788), 52320 states have internal predecessors, (77788), 15379 states have call successors, (15379), 54 states have call predecessors, (15379), 53 states have return successors, (15378), 15375 states have call predecessors, (15378), 15378 states have call successors, (15378) [2022-12-14 10:55:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67748 states to 67748 states and 108545 transitions. [2022-12-14 10:55:53,050 INFO L78 Accepts]: Start accepts. Automaton has 67748 states and 108545 transitions. Word has length 157 [2022-12-14 10:55:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:53,050 INFO L495 AbstractCegarLoop]: Abstraction has 67748 states and 108545 transitions. [2022-12-14 10:55:53,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 5.375) internal successors, (86), 18 states have internal predecessors, (86), 12 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2022-12-14 10:55:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 67748 states and 108545 transitions. [2022-12-14 10:55:53,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-14 10:55:53,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:53,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:53,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:55:53,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:53,164 INFO L85 PathProgramCache]: Analyzing trace with hash 999648898, now seen corresponding path program 1 times [2022-12-14 10:55:53,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:53,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549707740] [2022-12-14 10:55:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:53,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-14 10:55:55,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:55,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549707740] [2022-12-14 10:55:55,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549707740] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:55:55,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754283911] [2022-12-14 10:55:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:55,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:55,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:55,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:55,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:55:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:55,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 10:55:55,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 10:55:57,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:55:57,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754283911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:57,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:55:57,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [29] total 40 [2022-12-14 10:55:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626484555] [2022-12-14 10:55:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:55:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:57,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:55:57,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1457, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 10:55:57,658 INFO L87 Difference]: Start difference. First operand 67748 states and 108545 transitions. Second operand has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 7 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 9 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-14 10:56:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:56:03,331 INFO L93 Difference]: Finished difference Result 71000 states and 113615 transitions. [2022-12-14 10:56:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:56:03,332 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 7 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 9 states have call predecessors, (30), 7 states have call successors, (30) Word has length 163 [2022-12-14 10:56:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:56:03,519 INFO L225 Difference]: With dead ends: 71000 [2022-12-14 10:56:03,519 INFO L226 Difference]: Without dead ends: 70821 [2022-12-14 10:56:03,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 10:56:03,536 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 376 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:56:03,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1622 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:56:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70821 states. [2022-12-14 10:56:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70821 to 70598. [2022-12-14 10:56:08,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70598 states, 54351 states have (on average 1.4845908998914463) internal successors, (80689), 54718 states have internal predecessors, (80689), 16143 states have call successors, (16143), 106 states have call predecessors, (16143), 103 states have return successors, (16141), 15775 states have call predecessors, (16141), 16141 states have call successors, (16141) [2022-12-14 10:56:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70598 states to 70598 states and 112973 transitions. [2022-12-14 10:56:08,496 INFO L78 Accepts]: Start accepts. Automaton has 70598 states and 112973 transitions. Word has length 163 [2022-12-14 10:56:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:56:08,496 INFO L495 AbstractCegarLoop]: Abstraction has 70598 states and 112973 transitions. [2022-12-14 10:56:08,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 7 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 9 states have call predecessors, (30), 7 states have call successors, (30) [2022-12-14 10:56:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 70598 states and 112973 transitions. [2022-12-14 10:56:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-14 10:56:08,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:56:08,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:56:08,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:56:08,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 10:56:08,819 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:56:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:56:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1500985528, now seen corresponding path program 1 times [2022-12-14 10:56:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:56:08,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034672750] [2022-12-14 10:56:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:08,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:56:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:56:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-14 10:56:09,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:56:09,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034672750] [2022-12-14 10:56:09,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034672750] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:56:09,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657386446] [2022-12-14 10:56:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:09,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:56:09,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:56:09,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:56:09,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:56:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:56:10,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 90 conjunts are in the unsatisfiable core [2022-12-14 10:56:10,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:56:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 10:56:11,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:56:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-14 10:56:15,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657386446] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:56:15,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534818204] [2022-12-14 10:56:15,898 INFO L159 IcfgInterpreter]: Started Sifa with 119 locations of interest [2022-12-14 10:56:15,898 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:56:15,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:56:15,899 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:56:15,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:57:04,709 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 10:57:04,984 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 263 for LOIs [2022-12-14 10:57:07,700 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:57:07,976 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 538 for LOIs [2022-12-14 10:57:38,345 INFO L197 IcfgInterpreter]: Interpreting procedure queue with input of size 218 for LOIs [2022-12-14 10:57:38,372 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 208 for LOIs [2022-12-14 10:57:38,884 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 208 for LOIs [2022-12-14 10:57:38,910 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 208 for LOIs [2022-12-14 10:57:38,939 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 212 for LOIs [2022-12-14 10:57:38,989 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 208 for LOIs [2022-12-14 10:57:39,015 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 208 for LOIs [2022-12-14 10:57:39,042 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 396 for LOIs [2022-12-14 10:57:39,253 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 472 for LOIs [2022-12-14 10:57:40,781 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 208 for LOIs [2022-12-14 10:57:40,807 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:58:19,237 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 537 DAG size of output: 416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:58:29,722 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 543 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:58:36,216 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 539 DAG size of output: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:58:47,689 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 541 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:58:53,480 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 547 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:04,676 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 549 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:10,753 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 545 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:42,537 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 551 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:48,597 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 557 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:00:28,027 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 559 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:00:55,175 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 538 DAG size of output: 416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:01:03,304 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 550 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:01:59,359 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 625 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:02:06,430 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 622 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:02:15,979 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 613 DAG size of output: 512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:02:23,782 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 617 DAG size of output: 516 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:02:31,052 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 615 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:02:40,243 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 679 DAG size of output: 575 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:02:50,418 WARN L233 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 689 DAG size of output: 574 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:03:33,968 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1529756#(and (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~tmp~9#1| 2147483648)) (<= |outgoing_outgoing__wrappee__Keys_~msg#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_~tmp___0~9#1| 2147483648)) (= ~__ste_Client_Keyring1_User2~0 0) (<= |outgoing_sign_#in~msg#1| 2147483647) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_#in~client#1| 2147483648)) (<= ~queued_message~0 2147483647) (<= 0 (+ |outgoing_~msg#1| 2147483648)) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (<= |outgoing_outgoing__wrappee__Keys_~client#1| 2147483647) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~client#1| 2147483647) (<= |outgoing_mail_#in~client#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 2147483648)) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 2147483648)) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 0 (+ 2147483648 |outgoing___utac_acc__SignForward_spec__1_~msg#1|)) (<= |outgoing_sign_~privkey~1#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483648)) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (<= |outgoing_getClientId_~retValue_acc~27#1| 2147483647) (= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 2147483647) (<= |outgoing_~client#1| 2147483647) (<= ~__ste_client_idCounter2~0 3) (= ~__ste_email_body1~0.offset 0) (<= 0 (+ |outgoing_getClientId_~handle#1| 2147483648)) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing_sign_~msg#1| 2147483647) (= ~__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) (<= |outgoing_getClientId_~handle#1| 2147483647) (= ~__ste_ClientAddressBook_size0~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 2147483647) (<= |old(~queued_client~0)| 2147483647) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483647) (<= 0 (+ |outgoing_getClientId_~retValue_acc~27#1| 2147483648)) (<= |outgoing_outgoing__wrappee__Keys_#in~msg#1| 2147483647) (<= 0 |outgoing_outgoing__wrappee__AutoResponder_~tmp___0~3#1|) (<= |outgoing_getClientId_#res#1| 2147483647) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~16#1|)) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~client#1| 2147483648)) (<= 0 (+ ~queued_client~0 2147483648)) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= 789 ~__ste_client_privateKey2~0) (<= |outgoing_#in~client#1| 2147483647) (<= |outgoing_sign_~tmp~16#1| 2147483647) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~queued_message~0 2147483648)) (<= 0 (+ |outgoing_mail_~msg#1| 2147483648)) (<= |outgoing_sign_#in~client#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 (+ |outgoing_mail_#in~msg#1| 2147483648)) (= ~__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) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 2147483648)) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~receiver~0#1| 2147483648)) (= ~__ste_email_body0~0.base 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= 0 (+ |outgoing_~client#1| 2147483648)) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 2147483647) (<= 0 (+ |outgoing_mail_~__utac__ad__arg2~0#1| 2147483648)) (<= 0 ~queue_empty~0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~msg#1| 2147483648)) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 2147483647) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp~9#1| 2147483647) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~25#1| 0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 2147483647) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~9#1| 2147483647) (= ~__ste_client_outbuffer0~0 0) (<= |outgoing_#in~msg#1| 2147483647) (<= 0 (+ |outgoing_#in~client#1| 2147483648)) (<= 0 (+ |outgoing_sign_~msg#1| 2147483648)) (<= 0 (+ |old(~queued_client~0)| 2147483648)) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp___0~3#1| 0) (= ~__SELECTED_FEATURE_Base~0 0) (<= 0 (+ |old(~queued_message~0)| 2147483648)) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_getClientId_#in~handle#1| 2147483647) (= ~__ste_Client_Keyring2_User0~0 0) (= |outgoing_outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (<= |outgoing_outgoing__wrappee__AutoResponder_~receiver~0#1| 2147483647) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 (+ |outgoing_getClientId_#in~handle#1| 2147483648)) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 (+ 2147483648 |outgoing_mail_~client#1|)) (<= |outgoing_mail_~client#1| 2147483647) (= ~__ste_email_subject1~0.base 0) (<= |outgoing_mail_~msg#1| 2147483647) (<= |old(~queue_empty~0)| 1) (<= |outgoing_mail_#in~msg#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 0 (+ |outgoing_#in~msg#1| 2147483648)) (= ~__ste_Client_Keyring2_User2~0 0) (<= 0 (+ |outgoing_sign_~client#1| 2147483648)) (= ~head~0.base 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 2147483647) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_~msg#1| 2147483647) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 0 (+ |outgoing_sign_~privkey~1#1| 2147483648)) (<= |old(~queued_message~0)| 2147483647) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= 0 (+ |outgoing_sign_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~tmp~8#1| 2147483648)) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~queued_client~0 2147483647) (<= |outgoing_outgoing__wrappee__Keys_#in~client#1| 2147483647) (<= |outgoing_sign_~client#1| 2147483647) (<= 0 (+ |outgoing_sign_#in~client#1| 2147483648)) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ |outgoing_mail_~__utac__ad__arg1~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (<= 0 (+ |outgoing_mail_#in~client#1| 2147483648)) (= ~__ste_ClientKeyring_size2~0 0) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 2147483647) (<= |outgoing_outgoing__wrappee__Keys_~tmp~8#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~client#1| 2147483648)) (= |#NULL.base| 0))' at error location [2022-12-14 11:03:33,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:03:33,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:03:33,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 55 [2022-12-14 11:03:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917680786] [2022-12-14 11:03:33,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:03:33,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-14 11:03:33,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:03:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-14 11:03:33,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1786, Invalid=23336, Unknown=0, NotChecked=0, Total=25122 [2022-12-14 11:03:33,984 INFO L87 Difference]: Start difference. First operand 70598 states and 112973 transitions. Second operand has 55 states, 43 states have (on average 5.4186046511627906) internal successors, (233), 46 states have internal predecessors, (233), 34 states have call successors, (79), 7 states have call predecessors, (79), 16 states have return successors, (78), 40 states have call predecessors, (78), 34 states have call successors, (78) [2022-12-14 11:03:58,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:03:58,250 INFO L93 Difference]: Finished difference Result 105344 states and 168238 transitions. [2022-12-14 11:03:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-14 11:03:58,251 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 43 states have (on average 5.4186046511627906) internal successors, (233), 46 states have internal predecessors, (233), 34 states have call successors, (79), 7 states have call predecessors, (79), 16 states have return successors, (78), 40 states have call predecessors, (78), 34 states have call successors, (78) Word has length 162 [2022-12-14 11:03:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:03:58,515 INFO L225 Difference]: With dead ends: 105344 [2022-12-14 11:03:58,516 INFO L226 Difference]: Without dead ends: 105167 [2022-12-14 11:03:58,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14156 ImplicationChecksByTransitivity, 356.9s TimeCoverageRelationStatistics Valid=2471, Invalid=34585, Unknown=0, NotChecked=0, Total=37056 [2022-12-14 11:03:58,548 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1591 mSDsluCounter, 3868 mSDsCounter, 0 mSdLazyCounter, 7208 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 8336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 7208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:03:58,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 4148 Invalid, 8336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 7208 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 11:03:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105167 states. [2022-12-14 11:04:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105167 to 105124. [2022-12-14 11:04:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105124 states, 81037 states have (on average 1.483297752878315) internal successors, (120202), 81573 states have internal predecessors, (120202), 23896 states have call successors, (23896), 196 states have call predecessors, (23896), 190 states have return successors, (23892), 23358 states have call predecessors, (23892), 23892 states have call successors, (23892) [2022-12-14 11:04:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105124 states to 105124 states and 167990 transitions. [2022-12-14 11:04:17,174 INFO L78 Accepts]: Start accepts. Automaton has 105124 states and 167990 transitions. Word has length 162 [2022-12-14 11:04:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:17,174 INFO L495 AbstractCegarLoop]: Abstraction has 105124 states and 167990 transitions. [2022-12-14 11:04:17,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 43 states have (on average 5.4186046511627906) internal successors, (233), 46 states have internal predecessors, (233), 34 states have call successors, (79), 7 states have call predecessors, (79), 16 states have return successors, (78), 40 states have call predecessors, (78), 34 states have call successors, (78) [2022-12-14 11:04:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 105124 states and 167990 transitions. [2022-12-14 11:04:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-14 11:04:17,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:17,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:17,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:04:17,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08b079b-a314-49bf-b0c9-2068b452f51a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:04:17,576 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2001259584, now seen corresponding path program 1 times [2022-12-14 11:04:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:17,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024269181] [2022-12-14 11:04:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-14 11:04:17,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:17,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024269181] [2022-12-14 11:04:17,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024269181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:17,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:17,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:04:17,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217676320] [2022-12-14 11:04:17,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:17,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:04:17,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:17,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:04:17,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:04:17,718 INFO L87 Difference]: Start difference. First operand 105124 states and 167990 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29)