./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product28.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_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/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_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/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_a977560f-effd-4fec-bba4-a3090ace015c/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 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d --- 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 07:53:52,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:53:52,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:53:52,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:53:52,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:53:52,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:53:52,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:53:52,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:53:52,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:53:52,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:53:52,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:53:52,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:53:52,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:53:52,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:53:52,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:53:52,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:53:52,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:53:52,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:53:52,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:53:52,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:53:52,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:53:52,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:53:52,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:53:52,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:53:52,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:53:52,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:53:52,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:53:52,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:53:52,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:53:52,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:53:52,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:53:52,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:53:52,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:53:52,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:53:52,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:53:52,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:53:52,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:53:52,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:53:52,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:53:52,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:53:52,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:53:52,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:53:52,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:53:52,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:53:52,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:53:52,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:53:52,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:53:52,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:53:52,693 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:53:52,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:53:52,693 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:53:52,694 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:53:52,694 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:53:52,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:53:52,694 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:53:52,694 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:53:52,694 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:53:52,695 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:53:52,695 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:53:52,695 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:53:52,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:53:52,696 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:53:52,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:53:52,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:53:52,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:53:52,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:53:52,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:53:52,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:53:52,697 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:53:52,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:53:52,697 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:53:52,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:53:52,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:53:52,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:53:52,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:53:52,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:53:52,698 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:53:52,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:53:52,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:53:52,699 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:53:52,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:53:52,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:53:52,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:53:52,699 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_a977560f-effd-4fec-bba4-a3090ace015c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d [2022-12-14 07:53:52,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:53:52,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:53:52,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:53:52,911 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:53:52,911 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:53:52,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2022-12-14 07:53:55,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:53:55,777 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:53:55,777 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2022-12-14 07:53:55,792 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/data/2da4a30f4/4de058f6acdb425c89b799860f4b48ee/FLAGa33e902f6 [2022-12-14 07:53:55,804 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/data/2da4a30f4/4de058f6acdb425c89b799860f4b48ee [2022-12-14 07:53:55,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:53:55,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:53:55,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:53:55,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:53:55,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:53:55,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:53:55" (1/1) ... [2022-12-14 07:53:55,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63889f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:55, skipping insertion in model container [2022-12-14 07:53:55,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:53:55" (1/1) ... [2022-12-14 07:53:55,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:53:55,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:53:56,064 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,067 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,070 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_a977560f-effd-4fec-bba4-a3090ace015c/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2022-12-14 07:53:56,223 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,224 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,227 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,270 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,274 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:53:56,295 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:53:56,310 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,311 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,312 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_a977560f-effd-4fec-bba4-a3090ace015c/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2022-12-14 07:53:56,353 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,354 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,356 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,371 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,373 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:53:56,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:53:56,399 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:53:56,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56 WrapperNode [2022-12-14 07:53:56,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:53:56,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:53:56,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:53:56,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:53:56,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,465 INFO L138 Inliner]: procedures = 129, calls = 217, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 884 [2022-12-14 07:53:56,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:53:56,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:53:56,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:53:56,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:53:56,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:53:56,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:53:56,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:53:56,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:53:56,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (1/1) ... [2022-12-14 07:53:56,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:53:56,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:56,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:53:56,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:53:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 07:53:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 07:53:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 07:53:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 07:53:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 07:53:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 07:53:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 07:53:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 07:53:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 07:53:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 07:53:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 07:53:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 07:53:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 07:53:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 07:53:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 07:53:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 07:53:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 07:53:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 07:53:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 07:53:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 07:53:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 07:53:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 07:53:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 07:53:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 07:53:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 07:53:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:53:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 07:53:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 07:53:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 07:53:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 07:53:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 07:53:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 07:53:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 07:53:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 07:53:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 07:53:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 07:53:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 07:53:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 07:53:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 07:53:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 07:53:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 07:53:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 07:53:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 07:53:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 07:53:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 07:53:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 07:53:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:53:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 07:53:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 07:53:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:53:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:53:56,728 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:53:56,730 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:53:57,287 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:53:57,629 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:53:57,630 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:53:57,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:53:57 BoogieIcfgContainer [2022-12-14 07:53:57,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:53:57,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:53:57,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:53:57,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:53:57,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:53:55" (1/3) ... [2022-12-14 07:53:57,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b8a80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:53:57, skipping insertion in model container [2022-12-14 07:53:57,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:53:56" (2/3) ... [2022-12-14 07:53:57,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b8a80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:53:57, skipping insertion in model container [2022-12-14 07:53:57,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:53:57" (3/3) ... [2022-12-14 07:53:57,641 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2022-12-14 07:53:57,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:53:57,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:53:57,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:53:57,716 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;@3854ca7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:53:57,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:53:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 116 states have internal predecessors, (147), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 07:53:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 07:53:57,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:57,736 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] [2022-12-14 07:53:57,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:53:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1637021332, now seen corresponding path program 1 times [2022-12-14 07:53:57,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:57,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543172801] [2022-12-14 07:53:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:57,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:53:58,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543172801] [2022-12-14 07:53:58,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543172801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:58,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:58,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:53:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045789953] [2022-12-14 07:53:58,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:53:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:53:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:53:58,089 INFO L87 Difference]: Start difference. First operand has 190 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 116 states have internal predecessors, (147), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 07:53:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:58,204 INFO L93 Difference]: Finished difference Result 296 states and 392 transitions. [2022-12-14 07:53:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:53:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2022-12-14 07:53:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:58,214 INFO L225 Difference]: With dead ends: 296 [2022-12-14 07:53:58,214 INFO L226 Difference]: Without dead ends: 186 [2022-12-14 07:53:58,219 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 07:53:58,222 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:58,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:53:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-14 07:53:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-12-14 07:53:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 112 states have internal predecessors, (141), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 07:53:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2022-12-14 07:53:58,268 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 80 [2022-12-14 07:53:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:58,269 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2022-12-14 07:53:58,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 07:53:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2022-12-14 07:53:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 07:53:58,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:58,273 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] [2022-12-14 07:53:58,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:53:58,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:53:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash 500848044, now seen corresponding path program 1 times [2022-12-14 07:53:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:58,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566499028] [2022-12-14 07:53:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:58,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:53:58,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:58,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566499028] [2022-12-14 07:53:58,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566499028] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:58,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:58,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:53:58,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017947754] [2022-12-14 07:53:58,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:58,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:53:58,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:58,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:53:58,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:53:58,405 INFO L87 Difference]: Start difference. First operand 186 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 07:53:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:58,494 INFO L93 Difference]: Finished difference Result 291 states and 376 transitions. [2022-12-14 07:53:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:53:58,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 81 [2022-12-14 07:53:58,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:58,497 INFO L225 Difference]: With dead ends: 291 [2022-12-14 07:53:58,497 INFO L226 Difference]: Without dead ends: 188 [2022-12-14 07:53:58,498 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 07:53:58,499 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:58,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 435 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:53:58,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-14 07:53:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-12-14 07:53:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 110 states have (on average 1.3) internal successors, (143), 114 states have internal predecessors, (143), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 07:53:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2022-12-14 07:53:58,511 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 81 [2022-12-14 07:53:58,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:58,511 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2022-12-14 07:53:58,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 07:53:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2022-12-14 07:53:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 07:53:58,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:58,514 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] [2022-12-14 07:53:58,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:53:58,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:53:58,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1276459105, now seen corresponding path program 1 times [2022-12-14 07:53:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:58,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368763149] [2022-12-14 07:53:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:58,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:53:58,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:58,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368763149] [2022-12-14 07:53:58,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368763149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:53:58,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:53:58,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:53:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261860012] [2022-12-14 07:53:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:53:58,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:53:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:53:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:53:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:53:58,594 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 07:53:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:58,683 INFO L93 Difference]: Finished difference Result 406 states and 559 transitions. [2022-12-14 07:53:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:53:58,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2022-12-14 07:53:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:58,687 INFO L225 Difference]: With dead ends: 406 [2022-12-14 07:53:58,687 INFO L226 Difference]: Without dead ends: 236 [2022-12-14 07:53:58,689 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 07:53:58,690 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 57 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:58,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 450 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:53:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-14 07:53:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2022-12-14 07:53:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 142 states have (on average 1.380281690140845) internal successors, (196), 146 states have internal predecessors, (196), 66 states have call successors, (66), 23 states have call predecessors, (66), 22 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-12-14 07:53:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 325 transitions. [2022-12-14 07:53:58,707 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 325 transitions. Word has length 86 [2022-12-14 07:53:58,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:58,708 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 325 transitions. [2022-12-14 07:53:58,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 07:53:58,708 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 325 transitions. [2022-12-14 07:53:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 07:53:58,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:58,714 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] [2022-12-14 07:53:58,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:53:58,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:53:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1228055158, now seen corresponding path program 1 times [2022-12-14 07:53:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:58,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386506929] [2022-12-14 07:53:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:53:58,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:58,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386506929] [2022-12-14 07:53:58,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386506929] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:58,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793496392] [2022-12-14 07:53:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:58,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:58,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:58,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:58,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:53:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:59,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:53:59,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:53:59,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:53:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:53:59,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793496392] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:53:59,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1092401500] [2022-12-14 07:53:59,214 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-12-14 07:53:59,214 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:53:59,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:53:59,224 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:53:59,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:54:30,575 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-12-14 07:54:30,974 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2022-12-14 07:54:31,275 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:55:11,765 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 585 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:55:30,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1092401500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:55:30,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:55:30,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-12-14 07:55:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15242839] [2022-12-14 07:55:30,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:55:30,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 07:55:30,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:55:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 07:55:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-12-14 07:55:30,119 INFO L87 Difference]: Start difference. First operand 231 states and 325 transitions. Second operand has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-14 07:55:36,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:55:36,633 INFO L93 Difference]: Finished difference Result 541 states and 811 transitions. [2022-12-14 07:55:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:55:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 87 [2022-12-14 07:55:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:55:36,639 INFO L225 Difference]: With dead ends: 541 [2022-12-14 07:55:36,639 INFO L226 Difference]: Without dead ends: 328 [2022-12-14 07:55:36,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-12-14 07:55:36,642 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 134 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:55:36,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 3010 Invalid, 1963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 07:55:36,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-12-14 07:55:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 254. [2022-12-14 07:55:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 164 states have (on average 1.396341463414634) internal successors, (229), 168 states have internal predecessors, (229), 66 states have call successors, (66), 24 states have call predecessors, (66), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-12-14 07:55:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 358 transitions. [2022-12-14 07:55:36,792 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 358 transitions. Word has length 87 [2022-12-14 07:55:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:55:36,792 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 358 transitions. [2022-12-14 07:55:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-14 07:55:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 358 transitions. [2022-12-14 07:55:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 07:55:36,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:55:36,798 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 07:55:36,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:55:36,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:55:37,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:55:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:55:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1164036837, now seen corresponding path program 1 times [2022-12-14 07:55:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:55:37,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251410167] [2022-12-14 07:55:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:55:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:55:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:55:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:55:37,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:55:37,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251410167] [2022-12-14 07:55:37,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251410167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:55:37,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:55:37,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:55:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416994701] [2022-12-14 07:55:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:55:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:55:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:55:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:55:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:55:37,107 INFO L87 Difference]: Start difference. First operand 254 states and 358 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (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 07:55:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:55:37,384 INFO L93 Difference]: Finished difference Result 601 states and 880 transitions. [2022-12-14 07:55:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:55:37,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (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 92 [2022-12-14 07:55:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:55:37,388 INFO L225 Difference]: With dead ends: 601 [2022-12-14 07:55:37,388 INFO L226 Difference]: Without dead ends: 371 [2022-12-14 07:55:37,389 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 07:55:37,390 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 55 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:55:37,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 451 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:55:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-12-14 07:55:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 366. [2022-12-14 07:55:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 251 states have (on average 1.454183266932271) internal successors, (365), 255 states have internal predecessors, (365), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-14 07:55:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 544 transitions. [2022-12-14 07:55:37,531 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 544 transitions. Word has length 92 [2022-12-14 07:55:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:55:37,531 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 544 transitions. [2022-12-14 07:55:37,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (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 07:55:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 544 transitions. [2022-12-14 07:55:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 07:55:37,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:55:37,533 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 07:55:37,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:55:37,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:55:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:55:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1061560999, now seen corresponding path program 1 times [2022-12-14 07:55:37,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:55:37,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124809611] [2022-12-14 07:55:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:55:37,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:55:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:55:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:55:37,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:55:37,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124809611] [2022-12-14 07:55:37,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124809611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:55:37,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030679650] [2022-12-14 07:55:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:55:37,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:55:37,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:55:37,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:55:37,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:55:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:55:37,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:55:37,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:55:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:55:37,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:55:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:55:37,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030679650] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:55:37,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1603980356] [2022-12-14 07:55:37,941 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-12-14 07:55:37,942 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:55:37,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:55:37,942 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:55:37,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:56:18,104 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:56:18,394 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-12-14 07:56:18,681 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:57:03,903 WARN L233 SmtUtils]: Spent 11.04s on a formula simplification. DAG size of input: 589 DAG size of output: 459 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:57:28,297 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 570 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:57:33,840 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 566 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:57:36,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1603980356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:57:36,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:57:36,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-12-14 07:57:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904572186] [2022-12-14 07:57:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:57:36,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 07:57:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:57:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 07:57:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-12-14 07:57:36,881 INFO L87 Difference]: Start difference. First operand 366 states and 544 transitions. Second operand has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-12-14 07:57:48,156 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification. DAG size of input: 571 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:58:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:58:10,753 INFO L93 Difference]: Finished difference Result 826 states and 1288 transitions. [2022-12-14 07:58:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 07:58:10,754 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 93 [2022-12-14 07:58:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:58:10,757 INFO L225 Difference]: With dead ends: 826 [2022-12-14 07:58:10,757 INFO L226 Difference]: Without dead ends: 523 [2022-12-14 07:58:10,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 104.6s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 07:58:10,759 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 305 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:58:10,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 3503 Invalid, 2256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-12-14 07:58:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-12-14 07:58:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 428. [2022-12-14 07:58:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 309 states have (on average 1.5016181229773462) internal successors, (464), 315 states have internal predecessors, (464), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-14 07:58:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 649 transitions. [2022-12-14 07:58:10,961 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 649 transitions. Word has length 93 [2022-12-14 07:58:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:58:10,962 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 649 transitions. [2022-12-14 07:58:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-12-14 07:58:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 649 transitions. [2022-12-14 07:58:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 07:58:10,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:58:10,963 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] [2022-12-14 07:58:10,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:58:11,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:58:11,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:58:11,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:58:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash 952081497, now seen corresponding path program 1 times [2022-12-14 07:58:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:58:11,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453590400] [2022-12-14 07:58:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:58:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:58:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:58:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:58:11,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:58:11,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453590400] [2022-12-14 07:58:11,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453590400] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:58:11,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220050790] [2022-12-14 07:58:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:58:11,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:58:11,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:58:11,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:58:11,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:58:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:58:11,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:58:11,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:58:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:58:11,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:58:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:58:11,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220050790] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:58:11,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [399975975] [2022-12-14 07:58:11,600 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-12-14 07:58:11,600 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:58:11,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:58:11,601 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:58:11,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:59:48,294 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:59:48,580 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-12-14 07:59:48,857 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-12-14 07:59:49,130 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 238 for LOIs [2022-12-14 07:59:49,703 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-12-14 07:59:49,759 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2022-12-14 07:59:50,061 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 233 for LOIs [2022-12-14 08:00:31,637 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 220 for LOIs [2022-12-14 08:00:31,662 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 409 for LOIs [2022-12-14 08:00:32,108 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 386 for LOIs [2022-12-14 08:00:32,344 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 223 for LOIs [2022-12-14 08:00:32,377 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 381 for LOIs [2022-12-14 08:00:32,562 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-12-14 08:00:33,931 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 225 for LOIs [2022-12-14 08:00:33,965 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:01:26,959 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 532 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:01:40,892 WARN L233 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 527 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:01:59,335 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 424 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:03:19,322 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 626 DAG size of output: 485 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:03:29,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9299#(and (= ~queued_client~0 0) (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (<= ~__ste_client_idCounter2~0 3) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= 0 ~__ste_Client_Keyring0_User0~0) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Email_counter~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) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_email_to1~0 0) (= ~__ste_client_name1~0.offset 0) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= ~sent_signed~0 1) (<= ~__ste_client_privateKey2~0 789) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= ~__ste_email_encryptionKey0~0 0) (= ~__ste_email_subject1~0.base 0) (= ~__ste_Client_AddressBook1_Alias0~0 0) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 0 ~__ste_email_isSigned0~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~queued_message~0 0) (= ~__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) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_client_autoResponse2~0 0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0))' at error location [2022-12-14 08:03:29,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:03:29,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:03:29,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 08:03:29,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807965390] [2022-12-14 08:03:29,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:03:29,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:03:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:03:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:03:29,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=5591, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 08:03:29,798 INFO L87 Difference]: Start difference. First operand 428 states and 649 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-14 08:03:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:30,528 INFO L93 Difference]: Finished difference Result 1079 states and 1675 transitions. [2022-12-14 08:03:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:03:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 96 [2022-12-14 08:03:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:30,531 INFO L225 Difference]: With dead ends: 1079 [2022-12-14 08:03:30,531 INFO L226 Difference]: Without dead ends: 976 [2022-12-14 08:03:30,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 175.8s TimeCoverageRelationStatistics Valid=261, Invalid=5591, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 08:03:30,533 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 191 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:30,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1030 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:03:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-12-14 08:03:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 955. [2022-12-14 08:03:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 729 states have (on average 1.5240054869684498) internal successors, (1111), 738 states have internal predecessors, (1111), 201 states have call successors, (201), 25 states have call predecessors, (201), 24 states have return successors, (198), 193 states have call predecessors, (198), 198 states have call successors, (198) [2022-12-14 08:03:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1510 transitions. [2022-12-14 08:03:31,087 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1510 transitions. Word has length 96 [2022-12-14 08:03:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:31,087 INFO L495 AbstractCegarLoop]: Abstraction has 955 states and 1510 transitions. [2022-12-14 08:03:31,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-14 08:03:31,088 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1510 transitions. [2022-12-14 08:03:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 08:03:31,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:31,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:31,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:03:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:03:31,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:03:31,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1630877164, now seen corresponding path program 1 times [2022-12-14 08:03:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:03:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178776251] [2022-12-14 08:03:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:03:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 08:03:32,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:03:32,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178776251] [2022-12-14 08:03:32,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178776251] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:03:32,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130590403] [2022-12-14 08:03:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:32,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:03:32,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:03:32,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:03:32,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a977560f-effd-4fec-bba4-a3090ace015c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:03:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:32,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 122 conjunts are in the unsatisfiable core [2022-12-14 08:03:32,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:03:33,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:03:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 08:03:35,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130590403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:03:35,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432942634] [2022-12-14 08:03:35,721 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2022-12-14 08:03:35,721 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:03:35,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:03:35,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:03:35,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:04:09,177 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 08:04:09,466 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2022-12-14 08:04:09,759 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 263 for LOIs [2022-12-14 08:04:10,450 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-12-14 08:04:54,107 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 245 for LOIs [2022-12-14 08:04:54,137 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 467 for LOIs [2022-12-14 08:04:54,711 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 457 for LOIs [2022-12-14 08:04:55,330 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 248 for LOIs [2022-12-14 08:04:55,369 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-12-14 08:04:55,409 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 481 for LOIs [2022-12-14 08:05:00,017 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 250 for LOIs [2022-12-14 08:05:00,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:07:46,592 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 533 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)