./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/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_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/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_cbd88aab-4a31-45fd-86ee-58b3dab59647/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 e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b --- 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 14:40:18,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:40:18,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:40:18,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:40:18,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:40:18,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:40:18,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:40:18,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:40:18,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:40:18,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:40:18,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:40:18,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:40:18,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:40:18,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:40:18,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:40:18,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:40:18,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:40:18,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:40:18,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:40:18,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:40:18,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:40:18,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:40:18,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:40:18,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:40:18,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:40:18,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:40:18,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:40:18,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:40:18,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:40:18,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:40:18,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:40:18,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:40:18,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:40:18,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:40:18,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:40:18,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:40:18,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:40:18,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:40:18,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:40:18,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:40:18,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:40:18,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:40:18,372 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:40:18,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:40:18,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:40:18,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:40:18,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:40:18,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:40:18,374 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:40:18,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:40:18,374 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:40:18,374 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:40:18,374 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:40:18,375 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:40:18,375 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:40:18,375 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:40:18,375 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:40:18,375 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:40:18,375 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:40:18,375 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:40:18,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:40:18,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:40:18,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:40:18,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:40:18,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:40:18,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:40:18,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:40:18,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:40:18,377 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:40:18,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:40:18,377 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:40:18,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:40:18,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:40:18,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:40:18,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:40:18,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:40:18,378 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:40:18,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:40:18,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:40:18,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:40:18,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:40:18,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:40:18,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:40:18,379 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_cbd88aab-4a31-45fd-86ee-58b3dab59647/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b [2022-12-14 14:40:18,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:40:18,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:40:18,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:40:18,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:40:18,570 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:40:18,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2022-12-14 14:40:21,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:40:21,330 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:40:21,331 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2022-12-14 14:40:21,342 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/data/90f43356b/e470ac9b18c84f36a32125495dcbadc4/FLAGfa76233cc [2022-12-14 14:40:21,657 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/data/90f43356b/e470ac9b18c84f36a32125495dcbadc4 [2022-12-14 14:40:21,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:40:21,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:40:21,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:40:21,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:40:21,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:40:21,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:40:21" (1/1) ... [2022-12-14 14:40:21,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312a8898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:21, skipping insertion in model container [2022-12-14 14:40:21,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:40:21" (1/1) ... [2022-12-14 14:40:21,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:40:21,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:40:21,938 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:21,946 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:21,946 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:21,949 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:21,965 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:21,967 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,081 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_cbd88aab-4a31-45fd-86ee-58b3dab59647/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2022-12-14 14:40:22,109 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,110 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,112 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:40:22,145 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:40:22,163 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,166 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,166 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,168 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,174 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,175 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,219 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_cbd88aab-4a31-45fd-86ee-58b3dab59647/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2022-12-14 14:40:22,222 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,223 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,226 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:40:22,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:40:22,282 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:40:22,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22 WrapperNode [2022-12-14 14:40:22,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:40:22,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:40:22,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:40:22,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:40:22,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,371 INFO L138 Inliner]: procedures = 137, calls = 244, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1135 [2022-12-14 14:40:22,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:40:22,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:40:22,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:40:22,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:40:22,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:40:22,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:40:22,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:40:22,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:40:22,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (1/1) ... [2022-12-14 14:40:22,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:40:22,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:40:22,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:40:22,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:40:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 14:40:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 14:40:22,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 14:40:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 14:40:22,506 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 14:40:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 14:40:22,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 14:40:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 14:40:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 14:40:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 14:40:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 14:40:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 14:40:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 14:40:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 14:40:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 14:40:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 14:40:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 14:40:22,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 14:40:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 14:40:22,508 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 14:40:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 14:40:22,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 14:40:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 14:40:22,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 14:40:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 14:40:22,509 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 14:40:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 14:40:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 14:40:22,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 14:40:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 14:40:22,509 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 14:40:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 14:40:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 14:40:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:40:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 14:40:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 14:40:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 14:40:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 14:40:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 14:40:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 14:40:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 14:40:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 14:40:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 14:40:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 14:40:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 14:40:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 14:40:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 14:40:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 14:40:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 14:40:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 14:40:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 14:40:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 14:40:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 14:40:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 14:40:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 14:40:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 14:40:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:40:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 14:40:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 14:40:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 14:40:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 14:40:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:40:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:40:22,681 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:40:22,682 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:40:23,316 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:40:23,690 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:40:23,690 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:40:23,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:40:23 BoogieIcfgContainer [2022-12-14 14:40:23,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:40:23,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:40:23,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:40:23,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:40:23,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:40:21" (1/3) ... [2022-12-14 14:40:23,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b5130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:40:23, skipping insertion in model container [2022-12-14 14:40:23,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:40:22" (2/3) ... [2022-12-14 14:40:23,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b5130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:40:23, skipping insertion in model container [2022-12-14 14:40:23,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:40:23" (3/3) ... [2022-12-14 14:40:23,699 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product35.cil.c [2022-12-14 14:40:23,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:40:23,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:40:23,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:40:23,772 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;@370cc5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:40:23,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:40:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 14:40:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 14:40:23,786 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:40:23,786 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:40:23,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:40:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:40:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1540919591, now seen corresponding path program 1 times [2022-12-14 14:40:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:40:23,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053599328] [2022-12-14 14:40:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:40:23,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:40:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:40:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:40:24,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:40:24,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053599328] [2022-12-14 14:40:24,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053599328] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:40:24,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:40:24,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:40:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103281527] [2022-12-14 14:40:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:40:24,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:40:24,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:40:24,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:40:24,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:40:24,050 INFO L87 Difference]: Start difference. First operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:40:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:40:24,177 INFO L93 Difference]: Finished difference Result 386 states and 511 transitions. [2022-12-14 14:40:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:40:24,179 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 95 [2022-12-14 14:40:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:40:24,188 INFO L225 Difference]: With dead ends: 386 [2022-12-14 14:40:24,188 INFO L226 Difference]: Without dead ends: 236 [2022-12-14 14:40:24,191 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 14:40:24,193 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:40:24,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:40:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-14 14:40:24,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-12-14 14:40:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-14 14:40:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 313 transitions. [2022-12-14 14:40:24,236 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 313 transitions. Word has length 95 [2022-12-14 14:40:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:40:24,237 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 313 transitions. [2022-12-14 14:40:24,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:40:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 313 transitions. [2022-12-14 14:40:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 14:40:24,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:40:24,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:40:24,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:40:24,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:40:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:40:24,241 INFO L85 PathProgramCache]: Analyzing trace with hash -585292367, now seen corresponding path program 1 times [2022-12-14 14:40:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:40:24,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888923255] [2022-12-14 14:40:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:40:24,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:40:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:40:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:40:24,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:40:24,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888923255] [2022-12-14 14:40:24,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888923255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:40:24,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:40:24,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:40:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955967577] [2022-12-14 14:40:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:40:24,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:40:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:40:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:40:24,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:40:24,404 INFO L87 Difference]: Start difference. First operand 236 states and 313 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:40:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:40:24,523 INFO L93 Difference]: Finished difference Result 382 states and 496 transitions. [2022-12-14 14:40:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:40:24,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 85 [2022-12-14 14:40:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:40:24,526 INFO L225 Difference]: With dead ends: 382 [2022-12-14 14:40:24,526 INFO L226 Difference]: Without dead ends: 238 [2022-12-14 14:40:24,527 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 14:40:24,527 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:40:24,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:40:24,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-14 14:40:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-12-14 14:40:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 138 states have internal predecessors, (168), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-14 14:40:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 315 transitions. [2022-12-14 14:40:24,542 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 315 transitions. Word has length 85 [2022-12-14 14:40:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:40:24,542 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 315 transitions. [2022-12-14 14:40:24,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 14:40:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 315 transitions. [2022-12-14 14:40:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 14:40:24,545 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:40:24,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:40:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:40:24,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:40:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:40:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash -19540433, now seen corresponding path program 1 times [2022-12-14 14:40:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:40:24,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160070170] [2022-12-14 14:40:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:40:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:40:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:40:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:40:24,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:40:24,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160070170] [2022-12-14 14:40:24,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160070170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:40:24,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:40:24,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:40:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334272761] [2022-12-14 14:40:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:40:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:40:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:40:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:40:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:40:24,635 INFO L87 Difference]: Start difference. First operand 238 states and 315 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:40:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:40:24,765 INFO L93 Difference]: Finished difference Result 511 states and 697 transitions. [2022-12-14 14:40:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:40:24,766 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 101 [2022-12-14 14:40:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:40:24,768 INFO L225 Difference]: With dead ends: 511 [2022-12-14 14:40:24,768 INFO L226 Difference]: Without dead ends: 291 [2022-12-14 14:40:24,769 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 14:40:24,770 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 59 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:40:24,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 549 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:40:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-12-14 14:40:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 286. [2022-12-14 14:40:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 168 states have (on average 1.3273809523809523) internal successors, (223), 172 states have internal predecessors, (223), 88 states have call successors, (88), 29 states have call predecessors, (88), 29 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-12-14 14:40:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 398 transitions. [2022-12-14 14:40:24,796 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 398 transitions. Word has length 101 [2022-12-14 14:40:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:40:24,796 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 398 transitions. [2022-12-14 14:40:24,796 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:40:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 398 transitions. [2022-12-14 14:40:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 14:40:24,800 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:40:24,800 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:40:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:40:24,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:40:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:40:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1195439981, now seen corresponding path program 1 times [2022-12-14 14:40:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:40:24,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776036407] [2022-12-14 14:40:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:40:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:40:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:40:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:40:24,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:40:24,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776036407] [2022-12-14 14:40:24,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776036407] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:40:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571785612] [2022-12-14 14:40:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:40:24,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:40:24,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:40:24,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:40:24,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:40:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:40:25,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:40:25,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:40:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:40:25,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:40:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:40:25,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571785612] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:40:25,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [486997070] [2022-12-14 14:40:25,417 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-12-14 14:40:25,417 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:40:25,420 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:40:25,425 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:40:25,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:41:03,447 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:41:03,766 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 14:41:05,810 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:41:06,131 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-12-14 14:41:09,156 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 14:41:09,199 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 229 for LOIs [2022-12-14 14:41:09,239 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 237 for LOIs [2022-12-14 14:41:09,280 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 14:41:09,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:42:09,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [486997070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:42:09,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:42:09,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2022-12-14 14:42:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000123810] [2022-12-14 14:42:09,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:42:09,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 14:42:09,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:42:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 14:42:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1953, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 14:42:09,660 INFO L87 Difference]: Start difference. First operand 286 states and 398 transitions. Second operand has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2022-12-14 14:42:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:42:53,930 INFO L93 Difference]: Finished difference Result 702 states and 1047 transitions. [2022-12-14 14:42:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 14:42:53,930 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) Word has length 102 [2022-12-14 14:42:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:42:53,932 INFO L225 Difference]: With dead ends: 702 [2022-12-14 14:42:53,932 INFO L226 Difference]: Without dead ends: 434 [2022-12-14 14:42:53,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=201, Invalid=2991, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 14:42:53,934 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 283 mSDsluCounter, 6022 mSDsCounter, 0 mSdLazyCounter, 6794 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 6824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:42:53,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 6333 Invalid, 6824 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [30 Valid, 6794 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2022-12-14 14:42:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-12-14 14:42:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 333. [2022-12-14 14:42:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 204 states have (on average 1.3333333333333333) internal successors, (272), 208 states have internal predecessors, (272), 94 states have call successors, (94), 36 states have call predecessors, (94), 34 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-14 14:42:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 459 transitions. [2022-12-14 14:42:54,044 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 459 transitions. Word has length 102 [2022-12-14 14:42:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:42:54,044 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 459 transitions. [2022-12-14 14:42:54,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2022-12-14 14:42:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 459 transitions. [2022-12-14 14:42:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 14:42:54,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:42:54,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:42:54,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:42:54,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:42:54,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:42:54,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:42:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash -835295723, now seen corresponding path program 1 times [2022-12-14 14:42:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:42:54,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104177095] [2022-12-14 14:42:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:42:54,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:42:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:42:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:42:54,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:42:54,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104177095] [2022-12-14 14:42:54,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104177095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:42:54,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032446068] [2022-12-14 14:42:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:42:54,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:42:54,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:42:54,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:42:54,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:42:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:42:54,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:42:54,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:42:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:42:54,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:42:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:42:54,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032446068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:42:54,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250504921] [2022-12-14 14:42:54,627 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 14:42:54,627 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:42:54,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:42:54,628 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:42:54,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:43:27,390 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:43:27,717 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 14:43:29,703 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 14:43:29,746 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:43:30,073 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-12-14 14:43:33,142 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-12-14 14:43:45,171 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 14:43:45,917 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-12-14 14:43:45,966 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 14:43:46,610 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-12-14 14:43:46,688 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 14:43:47,350 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 14:43:52,644 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 14:43:52,696 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:46:08,060 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 598 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:46:13,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6523#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| |outgoing__wrappee__AutoResponder_incoming_~tmp~11#1|) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~5#1| 2) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~tmp~19#1| 0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~3#1|) (= ~__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__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~3#1| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| 2) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~7#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= |outgoing__wrappee__AutoResponder_verify_~client#1| |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__AutoResponder_verify_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1| 2147483647) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~26#1| 2147483647) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1|)) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (<= 3 ~__ste_client_idCounter2~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__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) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~26#1| 2147483648)) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (= |outgoing__wrappee__AutoResponder_verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_verify_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__AutoResponder_~tmp~7#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~5#1|) (<= ~queued_client~0 0))' at error location [2022-12-14 14:46:13,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:46:13,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:46:13,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 14:46:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501325320] [2022-12-14 14:46:13,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:46:13,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:46:13,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:46:13,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=5036, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 14:46:13,345 INFO L87 Difference]: Start difference. First operand 333 states and 459 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 14:46:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:14,222 INFO L93 Difference]: Finished difference Result 827 states and 1204 transitions. [2022-12-14 14:46:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:46:14,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 91 [2022-12-14 14:46:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:14,225 INFO L225 Difference]: With dead ends: 827 [2022-12-14 14:46:14,225 INFO L226 Difference]: Without dead ends: 662 [2022-12-14 14:46:14,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 140.6s TimeCoverageRelationStatistics Valid=220, Invalid=5036, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 14:46:14,228 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 162 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:14,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1255 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:46:14,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-12-14 14:46:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 643. [2022-12-14 14:46:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 435 states have (on average 1.432183908045977) internal successors, (623), 439 states have internal predecessors, (623), 173 states have call successors, (173), 36 states have call predecessors, (173), 34 states have return successors, (172), 169 states have call predecessors, (172), 172 states have call successors, (172) [2022-12-14 14:46:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 968 transitions. [2022-12-14 14:46:14,493 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 968 transitions. Word has length 91 [2022-12-14 14:46:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:14,493 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 968 transitions. [2022-12-14 14:46:14,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 14:46:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 968 transitions. [2022-12-14 14:46:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 14:46:14,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:14,496 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2022-12-14 14:46:14,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:46:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:46:14,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:14,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1978230695, now seen corresponding path program 1 times [2022-12-14 14:46:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:14,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635036283] [2022-12-14 14:46:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:14,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 14:46:14,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:14,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635036283] [2022-12-14 14:46:14,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635036283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:14,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:14,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750391356] [2022-12-14 14:46:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:14,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:14,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:14,785 INFO L87 Difference]: Start difference. First operand 643 states and 968 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 14:46:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:15,563 INFO L93 Difference]: Finished difference Result 1473 states and 2263 transitions. [2022-12-14 14:46:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:15,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 119 [2022-12-14 14:46:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:15,567 INFO L225 Difference]: With dead ends: 1473 [2022-12-14 14:46:15,567 INFO L226 Difference]: Without dead ends: 938 [2022-12-14 14:46:15,568 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 14:46:15,569 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 57 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:15,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 554 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-12-14 14:46:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 931. [2022-12-14 14:46:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 644 states have (on average 1.450310559006211) internal successors, (934), 648 states have internal predecessors, (934), 252 states have call successors, (252), 36 states have call predecessors, (252), 34 states have return successors, (251), 248 states have call predecessors, (251), 251 states have call successors, (251) [2022-12-14 14:46:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1437 transitions. [2022-12-14 14:46:16,001 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1437 transitions. Word has length 119 [2022-12-14 14:46:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:16,001 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1437 transitions. [2022-12-14 14:46:16,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 14:46:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1437 transitions. [2022-12-14 14:46:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-14 14:46:16,004 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:16,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:16,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:46:16,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1864610373, now seen corresponding path program 1 times [2022-12-14 14:46:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:16,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669864216] [2022-12-14 14:46:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:16,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:46:16,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:16,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669864216] [2022-12-14 14:46:16,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669864216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:16,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:16,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 14:46:16,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659661805] [2022-12-14 14:46:16,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:16,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 14:46:16,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 14:46:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:46:16,797 INFO L87 Difference]: Start difference. First operand 931 states and 1437 transitions. Second operand has 21 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 14:46:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:19,123 INFO L93 Difference]: Finished difference Result 1161 states and 1757 transitions. [2022-12-14 14:46:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 14:46:19,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 107 [2022-12-14 14:46:19,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:19,129 INFO L225 Difference]: With dead ends: 1161 [2022-12-14 14:46:19,129 INFO L226 Difference]: Without dead ends: 1157 [2022-12-14 14:46:19,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 14:46:19,130 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 544 mSDsluCounter, 3943 mSDsCounter, 0 mSdLazyCounter, 4339 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 4640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 4339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:19,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 4264 Invalid, 4640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 4339 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 14:46:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-12-14 14:46:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1149. [2022-12-14 14:46:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 765 states have (on average 1.4065359477124184) internal successors, (1076), 772 states have internal predecessors, (1076), 329 states have call successors, (329), 56 states have call predecessors, (329), 54 states have return successors, (332), 322 states have call predecessors, (332), 324 states have call successors, (332) [2022-12-14 14:46:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1737 transitions. [2022-12-14 14:46:19,643 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1737 transitions. Word has length 107 [2022-12-14 14:46:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:19,643 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1737 transitions. [2022-12-14 14:46:19,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 14:46:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1737 transitions. [2022-12-14 14:46:19,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-14 14:46:19,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:19,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:19,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:46:19,646 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:19,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1624654115, now seen corresponding path program 1 times [2022-12-14 14:46:19,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:19,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080700775] [2022-12-14 14:46:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:19,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 14:46:19,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:19,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080700775] [2022-12-14 14:46:19,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080700775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:19,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:19,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:19,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736797960] [2022-12-14 14:46:19,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:19,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:19,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:19,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:19,718 INFO L87 Difference]: Start difference. First operand 1149 states and 1737 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:46:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:20,416 INFO L93 Difference]: Finished difference Result 2404 states and 3714 transitions. [2022-12-14 14:46:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:20,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 129 [2022-12-14 14:46:20,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:20,423 INFO L225 Difference]: With dead ends: 2404 [2022-12-14 14:46:20,423 INFO L226 Difference]: Without dead ends: 1552 [2022-12-14 14:46:20,427 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 14:46:20,428 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 52 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:20,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 556 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2022-12-14 14:46:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1544. [2022-12-14 14:46:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1041 states have (on average 1.4390009606147935) internal successors, (1498), 1048 states have internal predecessors, (1498), 448 states have call successors, (448), 56 states have call predecessors, (448), 54 states have return successors, (451), 441 states have call predecessors, (451), 443 states have call successors, (451) [2022-12-14 14:46:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2397 transitions. [2022-12-14 14:46:21,062 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2397 transitions. Word has length 129 [2022-12-14 14:46:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:21,063 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2397 transitions. [2022-12-14 14:46:21,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:46:21,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2397 transitions. [2022-12-14 14:46:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 14:46:21,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:21,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:21,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:46:21,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -38675412, now seen corresponding path program 1 times [2022-12-14 14:46:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:21,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052208769] [2022-12-14 14:46:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 14:46:22,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:22,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052208769] [2022-12-14 14:46:22,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052208769] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:46:22,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473307678] [2022-12-14 14:46:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:22,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:46:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:46:22,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:46:22,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:46:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:22,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 14:46:22,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:46:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 14:46:23,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:46:23,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473307678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:23,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:46:23,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22] total 34 [2022-12-14 14:46:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303713390] [2022-12-14 14:46:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 14:46:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 14:46:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 14:46:23,094 INFO L87 Difference]: Start difference. First operand 1544 states and 2397 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-12-14 14:46:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:25,352 INFO L93 Difference]: Finished difference Result 2672 states and 4083 transitions. [2022-12-14 14:46:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 14:46:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 113 [2022-12-14 14:46:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:25,371 INFO L225 Difference]: With dead ends: 2672 [2022-12-14 14:46:25,371 INFO L226 Difference]: Without dead ends: 2530 [2022-12-14 14:46:25,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 14:46:25,374 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 864 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:25,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2445 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 14:46:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2022-12-14 14:46:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2362. [2022-12-14 14:46:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 1544 states have (on average 1.4229274611398963) internal successors, (2197), 1599 states have internal predecessors, (2197), 716 states have call successors, (716), 104 states have call predecessors, (716), 101 states have return successors, (719), 663 states have call predecessors, (719), 705 states have call successors, (719) [2022-12-14 14:46:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3632 transitions. [2022-12-14 14:46:26,414 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3632 transitions. Word has length 113 [2022-12-14 14:46:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:26,414 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 3632 transitions. [2022-12-14 14:46:26,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-12-14 14:46:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3632 transitions. [2022-12-14 14:46:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 14:46:26,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:26,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:26,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 14:46:26,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 14:46:26,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash -488391394, now seen corresponding path program 1 times [2022-12-14 14:46:26,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:26,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216522422] [2022-12-14 14:46:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:46:26,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216522422] [2022-12-14 14:46:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216522422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:26,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494056472] [2022-12-14 14:46:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:26,769 INFO L87 Difference]: Start difference. First operand 2362 states and 3632 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:28,341 INFO L93 Difference]: Finished difference Result 4908 states and 7645 transitions. [2022-12-14 14:46:28,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:28,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 119 [2022-12-14 14:46:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:28,350 INFO L225 Difference]: With dead ends: 4908 [2022-12-14 14:46:28,350 INFO L226 Difference]: Without dead ends: 2958 [2022-12-14 14:46:28,355 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 14:46:28,355 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 50 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:28,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 539 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2022-12-14 14:46:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2950. [2022-12-14 14:46:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1970 states have (on average 1.4411167512690355) internal successors, (2839), 2025 states have internal predecessors, (2839), 878 states have call successors, (878), 104 states have call predecessors, (878), 101 states have return successors, (881), 825 states have call predecessors, (881), 867 states have call successors, (881) [2022-12-14 14:46:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 4598 transitions. [2022-12-14 14:46:29,360 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 4598 transitions. Word has length 119 [2022-12-14 14:46:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:29,360 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 4598 transitions. [2022-12-14 14:46:29,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 4598 transitions. [2022-12-14 14:46:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-14 14:46:29,370 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:29,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:29,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 14:46:29,371 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash 384043048, now seen corresponding path program 1 times [2022-12-14 14:46:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:29,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509902108] [2022-12-14 14:46:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:29,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:46:29,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:29,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509902108] [2022-12-14 14:46:29,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509902108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:29,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:29,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523200892] [2022-12-14 14:46:29,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:29,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:29,458 INFO L87 Difference]: Start difference. First operand 2950 states and 4598 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:30,880 INFO L93 Difference]: Finished difference Result 6283 states and 9925 transitions. [2022-12-14 14:46:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 120 [2022-12-14 14:46:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:30,891 INFO L225 Difference]: With dead ends: 6283 [2022-12-14 14:46:30,891 INFO L226 Difference]: Without dead ends: 3892 [2022-12-14 14:46:30,897 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 14:46:30,897 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 48 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:30,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 539 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2022-12-14 14:46:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3884. [2022-12-14 14:46:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 2659 states have (on average 1.4588191049266641) internal successors, (3879), 2714 states have internal predecessors, (3879), 1123 states have call successors, (1123), 104 states have call predecessors, (1123), 101 states have return successors, (1126), 1070 states have call predecessors, (1126), 1112 states have call successors, (1126) [2022-12-14 14:46:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6128 transitions. [2022-12-14 14:46:32,169 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6128 transitions. Word has length 120 [2022-12-14 14:46:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:32,169 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 6128 transitions. [2022-12-14 14:46:32,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6128 transitions. [2022-12-14 14:46:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 14:46:32,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:32,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:32,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 14:46:32,177 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:32,178 INFO L85 PathProgramCache]: Analyzing trace with hash 659827050, now seen corresponding path program 1 times [2022-12-14 14:46:32,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:32,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209846551] [2022-12-14 14:46:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:32,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 14:46:32,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:32,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209846551] [2022-12-14 14:46:32,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209846551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:32,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:32,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:32,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150214939] [2022-12-14 14:46:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:32,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:32,238 INFO L87 Difference]: Start difference. First operand 3884 states and 6128 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:46:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:34,407 INFO L93 Difference]: Finished difference Result 9026 states and 14452 transitions. [2022-12-14 14:46:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:34,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 132 [2022-12-14 14:46:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:34,427 INFO L225 Difference]: With dead ends: 9026 [2022-12-14 14:46:34,427 INFO L226 Difference]: Without dead ends: 5848 [2022-12-14 14:46:34,436 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 14:46:34,436 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 46 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:34,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 556 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:34,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2022-12-14 14:46:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 5832. [2022-12-14 14:46:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 4046 states have (on average 1.4693524468610974) internal successors, (5945), 4126 states have internal predecessors, (5945), 1684 states have call successors, (1684), 104 states have call predecessors, (1684), 101 states have return successors, (1687), 1606 states have call predecessors, (1687), 1673 states have call successors, (1687) [2022-12-14 14:46:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9316 transitions. [2022-12-14 14:46:36,423 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9316 transitions. Word has length 132 [2022-12-14 14:46:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:36,423 INFO L495 AbstractCegarLoop]: Abstraction has 5832 states and 9316 transitions. [2022-12-14 14:46:36,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:46:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9316 transitions. [2022-12-14 14:46:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 14:46:36,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:36,435 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:36,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 14:46:36,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:36,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1973666935, now seen corresponding path program 1 times [2022-12-14 14:46:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:36,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904390371] [2022-12-14 14:46:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 14:46:36,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:36,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904390371] [2022-12-14 14:46:36,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904390371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:36,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:36,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:46:36,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964077919] [2022-12-14 14:46:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:36,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:46:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:46:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:46:36,545 INFO L87 Difference]: Start difference. First operand 5832 states and 9316 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 14:46:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:38,486 INFO L93 Difference]: Finished difference Result 10228 states and 16334 transitions. [2022-12-14 14:46:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:46:38,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 132 [2022-12-14 14:46:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:38,503 INFO L225 Difference]: With dead ends: 10228 [2022-12-14 14:46:38,504 INFO L226 Difference]: Without dead ends: 5745 [2022-12-14 14:46:38,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:46:38,512 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 133 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:38,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 829 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5745 states. [2022-12-14 14:46:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5745 to 5727. [2022-12-14 14:46:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5727 states, 3941 states have (on average 1.4572443542248161) internal successors, (5743), 4021 states have internal predecessors, (5743), 1684 states have call successors, (1684), 104 states have call predecessors, (1684), 101 states have return successors, (1687), 1606 states have call predecessors, (1687), 1673 states have call successors, (1687) [2022-12-14 14:46:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5727 states to 5727 states and 9114 transitions. [2022-12-14 14:46:40,531 INFO L78 Accepts]: Start accepts. Automaton has 5727 states and 9114 transitions. Word has length 132 [2022-12-14 14:46:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:40,532 INFO L495 AbstractCegarLoop]: Abstraction has 5727 states and 9114 transitions. [2022-12-14 14:46:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 14:46:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5727 states and 9114 transitions. [2022-12-14 14:46:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 14:46:40,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:40,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:40,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 14:46:40,548 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:40,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:40,549 INFO L85 PathProgramCache]: Analyzing trace with hash 862827980, now seen corresponding path program 1 times [2022-12-14 14:46:40,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:40,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079465901] [2022-12-14 14:46:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:40,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:46:40,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:40,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079465901] [2022-12-14 14:46:40,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079465901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:40,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:40,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437536446] [2022-12-14 14:46:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:40,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:40,624 INFO L87 Difference]: Start difference. First operand 5727 states and 9114 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:43,301 INFO L93 Difference]: Finished difference Result 13927 states and 22444 transitions. [2022-12-14 14:46:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:43,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 122 [2022-12-14 14:46:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:43,322 INFO L225 Difference]: With dead ends: 13927 [2022-12-14 14:46:43,322 INFO L226 Difference]: Without dead ends: 9075 [2022-12-14 14:46:43,330 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 14:46:43,331 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 44 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:43,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 548 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9075 states. [2022-12-14 14:46:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9075 to 9059. [2022-12-14 14:46:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9059 states, 6338 states have (on average 1.4649731776585673) internal successors, (9285), 6463 states have internal predecessors, (9285), 2619 states have call successors, (2619), 104 states have call predecessors, (2619), 101 states have return successors, (2622), 2496 states have call predecessors, (2622), 2608 states have call successors, (2622) [2022-12-14 14:46:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 14526 transitions. [2022-12-14 14:46:46,092 INFO L78 Accepts]: Start accepts. Automaton has 9059 states and 14526 transitions. Word has length 122 [2022-12-14 14:46:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:46,092 INFO L495 AbstractCegarLoop]: Abstraction has 9059 states and 14526 transitions. [2022-12-14 14:46:46,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9059 states and 14526 transitions. [2022-12-14 14:46:46,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-14 14:46:46,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:46,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 14:46:46,110 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1504896376, now seen corresponding path program 1 times [2022-12-14 14:46:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:46,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304881420] [2022-12-14 14:46:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:46:46,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304881420] [2022-12-14 14:46:46,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304881420] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:46,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:46,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:46,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729687362] [2022-12-14 14:46:46,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:46,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:46,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:46,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:46,164 INFO L87 Difference]: Start difference. First operand 9059 states and 14526 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:50,566 INFO L93 Difference]: Finished difference Result 22381 states and 36235 transitions. [2022-12-14 14:46:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:50,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 123 [2022-12-14 14:46:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:50,602 INFO L225 Difference]: With dead ends: 22381 [2022-12-14 14:46:50,602 INFO L226 Difference]: Without dead ends: 14645 [2022-12-14 14:46:50,617 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 14:46:50,617 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 42 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:50,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 542 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:46:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14645 states. [2022-12-14 14:46:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14645 to 14629. [2022-12-14 14:46:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14629 states, 10534 states have (on average 1.4735143345357888) internal successors, (15522), 10744 states have internal predecessors, (15522), 3993 states have call successors, (3993), 104 states have call predecessors, (3993), 101 states have return successors, (3996), 3785 states have call predecessors, (3996), 3982 states have call successors, (3996) [2022-12-14 14:46:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14629 states to 14629 states and 23511 transitions. [2022-12-14 14:46:55,059 INFO L78 Accepts]: Start accepts. Automaton has 14629 states and 23511 transitions. Word has length 123 [2022-12-14 14:46:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:55,059 INFO L495 AbstractCegarLoop]: Abstraction has 14629 states and 23511 transitions. [2022-12-14 14:46:55,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:46:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 14629 states and 23511 transitions. [2022-12-14 14:46:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 14:46:55,083 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:55,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:55,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 14:46:55,083 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1711159337, now seen corresponding path program 1 times [2022-12-14 14:46:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:55,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542429076] [2022-12-14 14:46:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:55,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 14:46:55,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:55,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542429076] [2022-12-14 14:46:55,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542429076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:55,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:55,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378552489] [2022-12-14 14:46:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:55,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:55,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:55,144 INFO L87 Difference]: Start difference. First operand 14629 states and 23511 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:47:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:47:02,676 INFO L93 Difference]: Finished difference Result 36997 states and 59887 transitions. [2022-12-14 14:47:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:47:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 135 [2022-12-14 14:47:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:47:02,734 INFO L225 Difference]: With dead ends: 36997 [2022-12-14 14:47:02,734 INFO L226 Difference]: Without dead ends: 24149 [2022-12-14 14:47:02,761 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 14:47:02,762 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 40 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:47:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 544 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:47:02,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24149 states. [2022-12-14 14:47:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24149 to 24141. [2022-12-14 14:47:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24141 states, 17596 states have (on average 1.4678904296431008) internal successors, (25829), 17806 states have internal predecessors, (25829), 6443 states have call successors, (6443), 104 states have call predecessors, (6443), 101 states have return successors, (6446), 6235 states have call predecessors, (6446), 6432 states have call successors, (6446) [2022-12-14 14:47:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24141 states to 24141 states and 38718 transitions. [2022-12-14 14:47:10,115 INFO L78 Accepts]: Start accepts. Automaton has 24141 states and 38718 transitions. Word has length 135 [2022-12-14 14:47:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:47:10,115 INFO L495 AbstractCegarLoop]: Abstraction has 24141 states and 38718 transitions. [2022-12-14 14:47:10,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:47:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 24141 states and 38718 transitions. [2022-12-14 14:47:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-14 14:47:10,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:10,149 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:47:10,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 14:47:10,149 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:47:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1243490622, now seen corresponding path program 1 times [2022-12-14 14:47:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:47:10,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234771865] [2022-12-14 14:47:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:10,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:47:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:47:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:47:10,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:47:10,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234771865] [2022-12-14 14:47:10,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234771865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:47:10,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:47:10,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:47:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975737237] [2022-12-14 14:47:10,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:47:10,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:47:10,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:47:10,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:47:10,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:47:10,205 INFO L87 Difference]: Start difference. First operand 24141 states and 38718 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:47:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:47:23,321 INFO L93 Difference]: Finished difference Result 63443 states and 102362 transitions. [2022-12-14 14:47:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:47:23,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 125 [2022-12-14 14:47:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:47:23,431 INFO L225 Difference]: With dead ends: 63443 [2022-12-14 14:47:23,431 INFO L226 Difference]: Without dead ends: 43082 [2022-12-14 14:47:23,465 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 14:47:23,466 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 38 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:47:23,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 547 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:47:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43082 states. [2022-12-14 14:47:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43082 to 43066. [2022-12-14 14:47:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43066 states, 31669 states have (on average 1.4597555969560139) internal successors, (46229), 32039 states have internal predecessors, (46229), 11295 states have call successors, (11295), 104 states have call predecessors, (11295), 101 states have return successors, (11298), 10927 states have call predecessors, (11298), 11284 states have call successors, (11298) [2022-12-14 14:47:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43066 states to 43066 states and 68822 transitions. [2022-12-14 14:47:35,112 INFO L78 Accepts]: Start accepts. Automaton has 43066 states and 68822 transitions. Word has length 125 [2022-12-14 14:47:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:47:35,112 INFO L495 AbstractCegarLoop]: Abstraction has 43066 states and 68822 transitions. [2022-12-14 14:47:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:47:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 43066 states and 68822 transitions. [2022-12-14 14:47:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-14 14:47:35,161 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:35,161 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:47:35,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 14:47:35,161 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:47:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1356697303, now seen corresponding path program 1 times [2022-12-14 14:47:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:47:35,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983548222] [2022-12-14 14:47:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:47:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:47:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 14:47:35,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:47:35,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983548222] [2022-12-14 14:47:35,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983548222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:47:35,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:47:35,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:47:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92472129] [2022-12-14 14:47:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:47:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:47:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:47:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:47:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:47:35,223 INFO L87 Difference]: Start difference. First operand 43066 states and 68822 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:47:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:47:54,007 INFO L93 Difference]: Finished difference Result 77316 states and 123619 transitions. [2022-12-14 14:47:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:47:54,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 137 [2022-12-14 14:47:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:47:54,209 INFO L225 Difference]: With dead ends: 77316 [2022-12-14 14:47:54,209 INFO L226 Difference]: Without dead ends: 76517 [2022-12-14 14:47:54,232 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 14:47:54,233 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 36 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:47:54,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 544 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:47:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76517 states. [2022-12-14 14:48:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76517 to 76509. [2022-12-14 14:48:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76509 states, 56744 states have (on average 1.4459326096151135) internal successors, (82048), 57114 states have internal predecessors, (82048), 19663 states have call successors, (19663), 104 states have call predecessors, (19663), 101 states have return successors, (19666), 19295 states have call predecessors, (19666), 19652 states have call successors, (19666) [2022-12-14 14:48:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76509 states to 76509 states and 121377 transitions. [2022-12-14 14:48:13,413 INFO L78 Accepts]: Start accepts. Automaton has 76509 states and 121377 transitions. Word has length 137 [2022-12-14 14:48:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:48:13,413 INFO L495 AbstractCegarLoop]: Abstraction has 76509 states and 121377 transitions. [2022-12-14 14:48:13,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 14:48:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 76509 states and 121377 transitions. [2022-12-14 14:48:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-14 14:48:13,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:48:13,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:48:13,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 14:48:13,471 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:48:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:48:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1334927197, now seen corresponding path program 1 times [2022-12-14 14:48:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:48:13,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54364902] [2022-12-14 14:48:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:48:13,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:48:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:48:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 14:48:13,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:48:13,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54364902] [2022-12-14 14:48:13,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54364902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:48:13,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:48:13,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 14:48:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908687112] [2022-12-14 14:48:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:48:13,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 14:48:13,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:48:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 14:48:13,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:48:13,749 INFO L87 Difference]: Start difference. First operand 76509 states and 121377 transitions. Second operand has 12 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 6 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2022-12-14 14:48:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:48:41,564 INFO L93 Difference]: Finished difference Result 109499 states and 173790 transitions. [2022-12-14 14:48:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:48:41,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 6 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) Word has length 138 [2022-12-14 14:48:41,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:48:41,910 INFO L225 Difference]: With dead ends: 109499 [2022-12-14 14:48:41,910 INFO L226 Difference]: Without dead ends: 108726 [2022-12-14 14:48:41,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:48:41,941 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 276 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:48:41,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2578 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 14:48:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108726 states. [2022-12-14 14:49:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108726 to 107643. [2022-12-14 14:49:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107643 states, 80800 states have (on average 1.451831683168317) internal successors, (117308), 81298 states have internal predecessors, (117308), 26650 states have call successors, (26650), 195 states have call predecessors, (26650), 192 states have return successors, (26649), 26158 states have call predecessors, (26649), 26627 states have call successors, (26649) [2022-12-14 14:49:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107643 states to 107643 states and 170607 transitions. [2022-12-14 14:49:09,006 INFO L78 Accepts]: Start accepts. Automaton has 107643 states and 170607 transitions. Word has length 138 [2022-12-14 14:49:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:09,007 INFO L495 AbstractCegarLoop]: Abstraction has 107643 states and 170607 transitions. [2022-12-14 14:49:09,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 6 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2022-12-14 14:49:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 107643 states and 170607 transitions. [2022-12-14 14:49:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 14:49:09,072 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:09,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:09,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 14:49:09,073 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:49:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash -113534495, now seen corresponding path program 1 times [2022-12-14 14:49:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:09,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329578033] [2022-12-14 14:49:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:49:10,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:10,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329578033] [2022-12-14 14:49:10,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329578033] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:49:10,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703232570] [2022-12-14 14:49:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:10,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:10,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:49:10,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:49:10,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd88aab-4a31-45fd-86ee-58b3dab59647/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:49:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:10,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 204 conjunts are in the unsatisfiable core [2022-12-14 14:49:10,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:49:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:49:13,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:49:29,306 WARN L233 SmtUtils]: Spent 15.11s on a formula simplification. DAG size of input: 1080 DAG size of output: 67 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)