./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/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_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/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_56d90384-3282-4133-a540-09f3c9de934a/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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:09:56,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:09:56,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:09:56,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:09:56,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:09:56,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:09:56,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:09:56,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:09:56,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:09:56,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:09:56,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:09:56,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:09:56,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:09:56,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:09:56,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:09:56,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:09:56,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:09:56,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:09:56,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:09:56,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:09:56,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:09:56,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:09:56,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:09:56,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:09:56,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:09:56,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:09:56,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:09:56,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:09:56,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:09:56,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:09:56,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:09:56,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:09:56,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:09:56,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:09:56,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:09:56,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:09:56,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:09:56,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:09:56,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:09:56,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:09:56,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:09:56,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:09:56,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:09:56,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:09:56,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:09:56,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:09:56,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:09:56,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:09:56,876 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:09:56,876 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:09:56,876 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:09:56,876 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:09:56,882 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:09:56,882 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:09:56,882 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:09:56,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:09:56,882 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:09:56,883 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:09:56,883 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:09:56,883 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:09:56,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:09:56,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:09:56,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:09:56,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:09:56,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:09:56,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:09:56,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:09:56,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:09:56,885 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:09:56,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:09:56,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:09:56,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:09:56,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:09:56,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:09:56,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:09:56,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:09:56,886 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:09:56,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:09:56,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:09:56,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:09:56,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:09:56,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:09:56,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:09:56,888 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_56d90384-3282-4133-a540-09f3c9de934a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2022-12-14 14:09:57,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:09:57,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:09:57,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:09:57,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:09:57,074 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:09:57,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2022-12-14 14:09:59,762 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:10:00,024 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:10:00,024 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2022-12-14 14:10:00,042 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/data/19252dd33/cd4f6f2f608f42f986bd9854d89fb7d7/FLAGdf0ba7972 [2022-12-14 14:10:00,055 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/data/19252dd33/cd4f6f2f608f42f986bd9854d89fb7d7 [2022-12-14 14:10:00,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:10:00,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:10:00,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:10:00,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:10:00,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:10:00,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3e2f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00, skipping insertion in model container [2022-12-14 14:10:00,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:10:00,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:10:00,321 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,340 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,341 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,350 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,384 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,387 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,486 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,488 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,493 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,621 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_56d90384-3282-4133-a540-09f3c9de934a/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2022-12-14 14:10:00,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:10:00,638 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:10:00,650 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,654 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,654 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,656 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,664 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,665 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,680 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,681 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,683 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:10:00,737 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_56d90384-3282-4133-a540-09f3c9de934a/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2022-12-14 14:10:00,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:10:00,774 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:10:00,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00 WrapperNode [2022-12-14 14:10:00,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:10:00,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:10:00,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:10:00,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:10:00,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,872 INFO L138 Inliner]: procedures = 151, calls = 280, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1299 [2022-12-14 14:10:00,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:10:00,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:10:00,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:10:00,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:10:00,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:10:00,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:10:00,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:10:00,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:10:00,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (1/1) ... [2022-12-14 14:10:00,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:10:00,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:10:00,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:10:00,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:10:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 14:10:00,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 14:10:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-12-14 14:10:00,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-12-14 14:10:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-12-14 14:10:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-12-14 14:10:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 14:10:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 14:10:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 14:10:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 14:10:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 14:10:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 14:10:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 14:10:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 14:10:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-12-14 14:10:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-12-14 14:10:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 14:10:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 14:10:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-12-14 14:10:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-12-14 14:10:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 14:10:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 14:10:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 14:10:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 14:10:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 14:10:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 14:10:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-12-14 14:10:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-12-14 14:10:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-12-14 14:10:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-12-14 14:10:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 14:10:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 14:10:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 14:10:00,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 14:10:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 14:10:00,993 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 14:10:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 14:10:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-12-14 14:10:00,993 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-12-14 14:10:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 14:10:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 14:10:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 14:10:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 14:10:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 14:10:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 14:10:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-12-14 14:10:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-12-14 14:10:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:10:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 14:10:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 14:10:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 14:10:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 14:10:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-12-14 14:10:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-12-14 14:10:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-12-14 14:10:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-12-14 14:10:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-12-14 14:10:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-12-14 14:10:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 14:10:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 14:10:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 14:10:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 14:10:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 14:10:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 14:10:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 14:10:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 14:10:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 14:10:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 14:10:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 14:10:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 14:10:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 14:10:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 14:10:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-12-14 14:10:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-12-14 14:10:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-12-14 14:10:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-12-14 14:10:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 14:10:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 14:10:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 14:10:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 14:10:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:10:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 14:10:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 14:10:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-12-14 14:10:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-12-14 14:10:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-12-14 14:10:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-12-14 14:10:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 14:10:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 14:10:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:10:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:10:01,206 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:10:01,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:10:01,931 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:10:02,421 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:10:02,421 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:10:02,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:10:02 BoogieIcfgContainer [2022-12-14 14:10:02,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:10:02,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:10:02,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:10:02,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:10:02,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:10:00" (1/3) ... [2022-12-14 14:10:02,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7322a6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:10:02, skipping insertion in model container [2022-12-14 14:10:02,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:10:00" (2/3) ... [2022-12-14 14:10:02,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7322a6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:10:02, skipping insertion in model container [2022-12-14 14:10:02,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:10:02" (3/3) ... [2022-12-14 14:10:02,432 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2022-12-14 14:10:02,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:10:02,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:10:02,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:10:02,498 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;@74efdb56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:10:02,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:10:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-12-14 14:10:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 14:10:02,526 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:10:02,526 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:10:02,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:10:02,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:10:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash 987341591, now seen corresponding path program 1 times [2022-12-14 14:10:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:10:02,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106215512] [2022-12-14 14:10:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:10:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:10:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:10:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:02,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:10:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106215512] [2022-12-14 14:10:02,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106215512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:10:02,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:10:02,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:10:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968787504] [2022-12-14 14:10:02,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:10:02,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:10:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:10:02,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:10:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:10:02,809 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:10:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:10:02,952 INFO L93 Difference]: Finished difference Result 596 states and 808 transitions. [2022-12-14 14:10:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:10:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2022-12-14 14:10:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:10:02,962 INFO L225 Difference]: With dead ends: 596 [2022-12-14 14:10:02,962 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 14:10:02,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:10:02,968 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:10:02,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:10:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 14:10:03,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-12-14 14:10:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 240 states have internal predecessors, (291), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-12-14 14:10:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 508 transitions. [2022-12-14 14:10:03,018 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 508 transitions. Word has length 110 [2022-12-14 14:10:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:10:03,019 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 508 transitions. [2022-12-14 14:10:03,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:10:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 508 transitions. [2022-12-14 14:10:03,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 14:10:03,023 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:10:03,023 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:10:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:10:03,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:10:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:10:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1554495482, now seen corresponding path program 1 times [2022-12-14 14:10:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:10:03,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938725364] [2022-12-14 14:10:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:10:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:10:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:10:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:03,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:10:03,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938725364] [2022-12-14 14:10:03,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938725364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:10:03,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:10:03,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:10:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572896128] [2022-12-14 14:10:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:10:03,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:10:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:10:03,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:10:03,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:10:03,165 INFO L87 Difference]: Start difference. First operand 374 states and 508 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:10:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:10:03,296 INFO L93 Difference]: Finished difference Result 592 states and 786 transitions. [2022-12-14 14:10:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:10:03,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 111 [2022-12-14 14:10:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:10:03,302 INFO L225 Difference]: With dead ends: 592 [2022-12-14 14:10:03,302 INFO L226 Difference]: Without dead ends: 376 [2022-12-14 14:10:03,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:10:03,305 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:10:03,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 913 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:10:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-12-14 14:10:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-12-14 14:10:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.3139013452914798) internal successors, (293), 242 states have internal predecessors, (293), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-12-14 14:10:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 510 transitions. [2022-12-14 14:10:03,337 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 510 transitions. Word has length 111 [2022-12-14 14:10:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:10:03,338 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 510 transitions. [2022-12-14 14:10:03,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:10:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 510 transitions. [2022-12-14 14:10:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 14:10:03,342 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:10:03,342 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:10:03,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:10:03,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:10:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:10:03,343 INFO L85 PathProgramCache]: Analyzing trace with hash 521825037, now seen corresponding path program 1 times [2022-12-14 14:10:03,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:10:03,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243774101] [2022-12-14 14:10:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:10:03,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:10:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:10:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:03,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:10:03,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243774101] [2022-12-14 14:10:03,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243774101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:10:03,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:10:03,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:10:03,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397042394] [2022-12-14 14:10:03,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:10:03,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:10:03,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:10:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:10:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:10:03,462 INFO L87 Difference]: Start difference. First operand 376 states and 510 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:10:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:10:03,625 INFO L93 Difference]: Finished difference Result 751 states and 1034 transitions. [2022-12-14 14:10:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:10:03,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 116 [2022-12-14 14:10:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:10:03,630 INFO L225 Difference]: With dead ends: 751 [2022-12-14 14:10:03,630 INFO L226 Difference]: Without dead ends: 443 [2022-12-14 14:10:03,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:10:03,633 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 84 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:10:03,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 925 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:10:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-12-14 14:10:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2022-12-14 14:10:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3653136531365313) internal successors, (370), 292 states have internal predecessors, (370), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-12-14 14:10:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 615 transitions. [2022-12-14 14:10:03,668 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 615 transitions. Word has length 116 [2022-12-14 14:10:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:10:03,668 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 615 transitions. [2022-12-14 14:10:03,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:10:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 615 transitions. [2022-12-14 14:10:03,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 14:10:03,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:10:03,672 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:10:03,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:10:03,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:10:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:10:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1728235997, now seen corresponding path program 1 times [2022-12-14 14:10:03,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:10:03,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95800033] [2022-12-14 14:10:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:10:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:10:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:10:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:03,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:10:03,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95800033] [2022-12-14 14:10:03,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95800033] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:10:03,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324491341] [2022-12-14 14:10:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:10:03,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:10:03,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:10:03,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:10:03,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:10:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:10:04,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:10:04,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:10:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:04,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:10:04,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324491341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:10:04,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:10:04,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 14:10:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260993685] [2022-12-14 14:10:04,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:10:04,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:10:04,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:10:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:10:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:10:04,242 INFO L87 Difference]: Start difference. First operand 438 states and 615 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 14:10:04,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:10:04,462 INFO L93 Difference]: Finished difference Result 1243 states and 1795 transitions. [2022-12-14 14:10:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:10:04,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 122 [2022-12-14 14:10:04,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:10:04,468 INFO L225 Difference]: With dead ends: 1243 [2022-12-14 14:10:04,468 INFO L226 Difference]: Without dead ends: 830 [2022-12-14 14:10:04,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:10:04,471 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 434 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:10:04,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1033 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:10:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-12-14 14:10:04,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 828. [2022-12-14 14:10:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 517 states have (on average 1.3636363636363635) internal successors, (705), 554 states have internal predecessors, (705), 225 states have call successors, (225), 85 states have call predecessors, (225), 85 states have return successors, (244), 223 states have call predecessors, (244), 223 states have call successors, (244) [2022-12-14 14:10:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1174 transitions. [2022-12-14 14:10:04,527 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1174 transitions. Word has length 122 [2022-12-14 14:10:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:10:04,527 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1174 transitions. [2022-12-14 14:10:04,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 14:10:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1174 transitions. [2022-12-14 14:10:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-14 14:10:04,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:10:04,530 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:10:04,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:10:04,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:10:04,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:10:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:10:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash 236125603, now seen corresponding path program 1 times [2022-12-14 14:10:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:10:04,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240225429] [2022-12-14 14:10:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:10:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:10:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:10:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:04,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:10:04,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240225429] [2022-12-14 14:10:04,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240225429] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:10:04,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943476186] [2022-12-14 14:10:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:10:04,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:10:04,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:10:04,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:10:04,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:10:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:10:05,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:10:05,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:10:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:05,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:10:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:10:05,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943476186] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:10:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [411227491] [2022-12-14 14:10:05,386 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2022-12-14 14:10:05,386 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:10:05,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:10:05,395 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:10:05,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:10:16,850 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2022-12-14 14:10:17,167 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:10:48,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [411227491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:10:48,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:10:48,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 14:10:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312689184] [2022-12-14 14:10:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:10:48,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:10:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:10:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:10:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2022-12-14 14:10:48,199 INFO L87 Difference]: Start difference. First operand 828 states and 1174 transitions. Second operand has 25 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 14:11:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:11:19,709 INFO L93 Difference]: Finished difference Result 1653 states and 2328 transitions. [2022-12-14 14:11:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 14:11:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 123 [2022-12-14 14:11:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:11:19,715 INFO L225 Difference]: With dead ends: 1653 [2022-12-14 14:11:19,715 INFO L226 Difference]: Without dead ends: 852 [2022-12-14 14:11:19,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=235, Invalid=1247, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 14:11:19,719 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 125 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:11:19,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 2232 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 14:11:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-12-14 14:11:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 841. [2022-12-14 14:11:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 523 states have (on average 1.3460803059273423) internal successors, (704), 560 states have internal predecessors, (704), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (244), 223 states have call predecessors, (244), 223 states have call successors, (244) [2022-12-14 14:11:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1173 transitions. [2022-12-14 14:11:19,809 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1173 transitions. Word has length 123 [2022-12-14 14:11:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:11:19,809 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1173 transitions. [2022-12-14 14:11:19,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 14:11:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1173 transitions. [2022-12-14 14:11:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-14 14:11:19,812 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:11:19,813 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:11:19,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:11:20,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:11:20,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:11:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:11:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2110404155, now seen corresponding path program 1 times [2022-12-14 14:11:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:11:20,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197796264] [2022-12-14 14:11:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:11:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:11:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:11:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:11:20,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:11:20,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197796264] [2022-12-14 14:11:20,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197796264] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:11:20,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048873730] [2022-12-14 14:11:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:11:20,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:11:20,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:11:20,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:11:20,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:11:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:11:20,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:11:20,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:11:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:11:20,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:11:20,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048873730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:11:20,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:11:20,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 14:11:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608898359] [2022-12-14 14:11:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:11:20,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:11:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:11:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:11:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:11:20,458 INFO L87 Difference]: Start difference. First operand 841 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 14:11:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:11:20,737 INFO L93 Difference]: Finished difference Result 1605 states and 2228 transitions. [2022-12-14 14:11:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:11:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 126 [2022-12-14 14:11:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:11:20,744 INFO L225 Difference]: With dead ends: 1605 [2022-12-14 14:11:20,744 INFO L226 Difference]: Without dead ends: 1213 [2022-12-14 14:11:20,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:11:20,747 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 413 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:11:20,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 961 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:11:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-12-14 14:11:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1211. [2022-12-14 14:11:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 758 states have (on average 1.345646437994723) internal successors, (1020), 809 states have internal predecessors, (1020), 322 states have call successors, (322), 130 states have call predecessors, (322), 130 states have return successors, (348), 318 states have call predecessors, (348), 319 states have call successors, (348) [2022-12-14 14:11:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1690 transitions. [2022-12-14 14:11:20,859 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1690 transitions. Word has length 126 [2022-12-14 14:11:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:11:20,860 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1690 transitions. [2022-12-14 14:11:20,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 14:11:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1690 transitions. [2022-12-14 14:11:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 14:11:20,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:11:20,863 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:11:20,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:11:21,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 14:11:21,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:11:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:11:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1951907819, now seen corresponding path program 1 times [2022-12-14 14:11:21,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:11:21,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513121414] [2022-12-14 14:11:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:11:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:11:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:11:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:11:21,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:11:21,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513121414] [2022-12-14 14:11:21,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513121414] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:11:21,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899687579] [2022-12-14 14:11:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:11:21,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:11:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:11:21,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:11:21,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:11:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:11:21,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:11:21,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:11:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:11:21,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:11:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:11:21,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899687579] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:11:21,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1482390548] [2022-12-14 14:11:21,423 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2022-12-14 14:11:21,424 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:11:21,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:11:21,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:11:21,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:11:32,829 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2022-12-14 14:11:33,142 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:12:04,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1482390548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:04,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:12:04,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-12-14 14:12:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255832286] [2022-12-14 14:12:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 14:12:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 14:12:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-12-14 14:12:04,432 INFO L87 Difference]: Start difference. First operand 1211 states and 1690 transitions. Second operand has 26 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 14:12:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:40,579 INFO L93 Difference]: Finished difference Result 1772 states and 2452 transitions. [2022-12-14 14:12:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 14:12:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 121 [2022-12-14 14:12:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:40,584 INFO L225 Difference]: With dead ends: 1772 [2022-12-14 14:12:40,584 INFO L226 Difference]: Without dead ends: 1214 [2022-12-14 14:12:40,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 59.8s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 14:12:40,586 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 93 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 5481 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:40,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 5481 Invalid, 2108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-12-14 14:12:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-12-14 14:12:40,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1211. [2022-12-14 14:12:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 758 states have (on average 1.3430079155672823) internal successors, (1018), 809 states have internal predecessors, (1018), 322 states have call successors, (322), 130 states have call predecessors, (322), 130 states have return successors, (348), 318 states have call predecessors, (348), 319 states have call successors, (348) [2022-12-14 14:12:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1688 transitions. [2022-12-14 14:12:40,690 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1688 transitions. Word has length 121 [2022-12-14 14:12:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:40,690 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1688 transitions. [2022-12-14 14:12:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 14:12:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1688 transitions. [2022-12-14 14:12:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-14 14:12:40,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:40,693 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:40,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:12:40,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 14:12:40,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash 566639918, now seen corresponding path program 1 times [2022-12-14 14:12:40,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:40,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342076905] [2022-12-14 14:12:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:40,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:12:40,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:40,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342076905] [2022-12-14 14:12:40,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342076905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:40,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:12:40,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:12:40,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145084334] [2022-12-14 14:12:40,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:40,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:12:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:12:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:12:40,988 INFO L87 Difference]: Start difference. First operand 1211 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:12:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:41,259 INFO L93 Difference]: Finished difference Result 3125 states and 4452 transitions. [2022-12-14 14:12:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:12:41,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-12-14 14:12:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:41,265 INFO L225 Difference]: With dead ends: 3125 [2022-12-14 14:12:41,265 INFO L226 Difference]: Without dead ends: 1975 [2022-12-14 14:12:41,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:12:41,269 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 468 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:41,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1137 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:12:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2022-12-14 14:12:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1973. [2022-12-14 14:12:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1237 states have (on average 1.3354890864995959) internal successors, (1652), 1313 states have internal predecessors, (1652), 522 states have call successors, (522), 213 states have call predecessors, (522), 213 states have return successors, (585), 516 states have call predecessors, (585), 517 states have call successors, (585) [2022-12-14 14:12:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2759 transitions. [2022-12-14 14:12:41,414 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2759 transitions. Word has length 124 [2022-12-14 14:12:41,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:41,415 INFO L495 AbstractCegarLoop]: Abstraction has 1973 states and 2759 transitions. [2022-12-14 14:12:41,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 14:12:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2759 transitions. [2022-12-14 14:12:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 14:12:41,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:41,419 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:41,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:12:41,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1842099433, now seen corresponding path program 1 times [2022-12-14 14:12:41,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:41,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103087723] [2022-12-14 14:12:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:41,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:12:41,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:41,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103087723] [2022-12-14 14:12:41,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103087723] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:12:41,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171405323] [2022-12-14 14:12:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:41,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:41,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:41,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:41,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:12:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:41,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:12:41,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:12:41,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:12:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:12:41,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171405323] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:41,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [484628006] [2022-12-14 14:12:41,864 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-12-14 14:12:41,864 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:12:41,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:12:41,865 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:12:41,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:12:52,838 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2022-12-14 14:12:53,150 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:13:22,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [484628006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:13:22,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:13:22,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-12-14 14:13:22,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969939517] [2022-12-14 14:13:22,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:13:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 14:13:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:13:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 14:13:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2022-12-14 14:13:22,630 INFO L87 Difference]: Start difference. First operand 1973 states and 2759 transitions. Second operand has 24 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-12-14 14:13:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:13:58,322 INFO L93 Difference]: Finished difference Result 2535 states and 3504 transitions. [2022-12-14 14:13:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 14:13:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 128 [2022-12-14 14:13:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:13:58,328 INFO L225 Difference]: With dead ends: 2535 [2022-12-14 14:13:58,328 INFO L226 Difference]: Without dead ends: 1776 [2022-12-14 14:13:58,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 59.3s TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 14:13:58,330 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 85 mSDsluCounter, 3610 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:13:58,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 4038 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-14 14:13:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-12-14 14:13:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1774. [2022-12-14 14:13:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1101 states have (on average 1.315168029064487) internal successors, (1448), 1169 states have internal predecessors, (1448), 471 states have call successors, (471), 200 states have call predecessors, (471), 201 states have return successors, (526), 467 states have call predecessors, (526), 463 states have call successors, (526) [2022-12-14 14:13:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2445 transitions. [2022-12-14 14:13:58,465 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2445 transitions. Word has length 128 [2022-12-14 14:13:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:13:58,465 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2445 transitions. [2022-12-14 14:13:58,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-12-14 14:13:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2445 transitions. [2022-12-14 14:13:58,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 14:13:58,469 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:13:58,469 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:13:58,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:13:58,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 14:13:58,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:13:58,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:13:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash -103158275, now seen corresponding path program 1 times [2022-12-14 14:13:58,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:13:58,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413923599] [2022-12-14 14:13:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:58,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:13:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:13:58,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:13:58,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413923599] [2022-12-14 14:13:58,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413923599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:13:58,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114680850] [2022-12-14 14:13:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:13:58,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:13:58,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:13:58,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:13:58,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:13:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:13:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:13:59,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:13:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:13:59,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:13:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:13:59,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114680850] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:13:59,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1428044103] [2022-12-14 14:13:59,102 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-12-14 14:13:59,103 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:13:59,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:13:59,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:13:59,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:14:10,792 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2022-12-14 14:14:11,096 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:14:45,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1428044103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:14:45,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:14:45,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-12-14 14:14:45,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944965739] [2022-12-14 14:14:45,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:14:45,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 14:14:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:14:45,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 14:14:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-12-14 14:14:45,634 INFO L87 Difference]: Start difference. First operand 1774 states and 2445 transitions. Second operand has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 14:15:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:15:22,387 INFO L93 Difference]: Finished difference Result 2321 states and 3180 transitions. [2022-12-14 14:15:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 14:15:22,388 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 128 [2022-12-14 14:15:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:15:22,393 INFO L225 Difference]: With dead ends: 2321 [2022-12-14 14:15:22,393 INFO L226 Difference]: Without dead ends: 1774 [2022-12-14 14:15:22,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 64.7s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 14:15:22,395 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 68 mSDsluCounter, 3971 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:15:22,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 4398 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 14:15:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-12-14 14:15:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1774. [2022-12-14 14:15:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1101 states have (on average 1.3142597638510445) internal successors, (1447), 1169 states have internal predecessors, (1447), 471 states have call successors, (471), 200 states have call predecessors, (471), 201 states have return successors, (526), 467 states have call predecessors, (526), 463 states have call successors, (526) [2022-12-14 14:15:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2444 transitions. [2022-12-14 14:15:22,525 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2444 transitions. Word has length 128 [2022-12-14 14:15:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:15:22,525 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2444 transitions. [2022-12-14 14:15:22,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-12-14 14:15:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2444 transitions. [2022-12-14 14:15:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-14 14:15:22,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:15:22,529 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:15:22,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 14:15:22,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 14:15:22,730 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:15:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:15:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash -851828369, now seen corresponding path program 1 times [2022-12-14 14:15:22,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:15:22,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069011497] [2022-12-14 14:15:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:15:22,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:15:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:15:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:15:22,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:15:22,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069011497] [2022-12-14 14:15:22,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069011497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:15:22,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:15:22,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:15:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443454191] [2022-12-14 14:15:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:15:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:15:22,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:15:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:15:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:15:22,797 INFO L87 Difference]: Start difference. First operand 1774 states and 2444 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 14:15:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:15:23,126 INFO L93 Difference]: Finished difference Result 4339 states and 5923 transitions. [2022-12-14 14:15:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:15:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 129 [2022-12-14 14:15:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:15:23,135 INFO L225 Difference]: With dead ends: 4339 [2022-12-14 14:15:23,135 INFO L226 Difference]: Without dead ends: 2649 [2022-12-14 14:15:23,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:15:23,139 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 434 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:15:23,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1101 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:15:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2022-12-14 14:15:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2647. [2022-12-14 14:15:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 1631 states have (on average 1.2483139178418148) internal successors, (2036), 1702 states have internal predecessors, (2036), 689 states have call successors, (689), 322 states have call predecessors, (689), 326 states have return successors, (777), 685 states have call predecessors, (777), 671 states have call successors, (777) [2022-12-14 14:15:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3502 transitions. [2022-12-14 14:15:23,332 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3502 transitions. Word has length 129 [2022-12-14 14:15:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:15:23,332 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 3502 transitions. [2022-12-14 14:15:23,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 14:15:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3502 transitions. [2022-12-14 14:15:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 14:15:23,336 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:15:23,336 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:15:23,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 14:15:23,337 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:15:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:15:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash 378192027, now seen corresponding path program 1 times [2022-12-14 14:15:23,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:15:23,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849766452] [2022-12-14 14:15:23,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:15:23,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:15:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:15:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:15:23,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:15:23,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849766452] [2022-12-14 14:15:23,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849766452] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:15:23,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299273118] [2022-12-14 14:15:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:15:23,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:15:23,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:15:23,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:15:23,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:15:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:15:23,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:15:23,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:15:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-14 14:15:23,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:15:23,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299273118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:15:23,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:15:23,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 14:15:23,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902695210] [2022-12-14 14:15:23,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:15:23,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:15:23,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:15:23,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:15:23,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:15:23,741 INFO L87 Difference]: Start difference. First operand 2647 states and 3502 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:15:23,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:15:23,985 INFO L93 Difference]: Finished difference Result 2837 states and 3725 transitions. [2022-12-14 14:15:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:15:23,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 132 [2022-12-14 14:15:23,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:15:23,992 INFO L225 Difference]: With dead ends: 2837 [2022-12-14 14:15:23,992 INFO L226 Difference]: Without dead ends: 1906 [2022-12-14 14:15:23,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:15:23,996 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 384 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:15:23,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 946 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:15:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-12-14 14:15:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1904. [2022-12-14 14:15:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1186 states have (on average 1.2588532883642496) internal successors, (1493), 1235 states have internal predecessors, (1493), 491 states have call successors, (491), 224 states have call predecessors, (491), 226 states have return successors, (526), 487 states have call predecessors, (526), 482 states have call successors, (526) [2022-12-14 14:15:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2510 transitions. [2022-12-14 14:15:24,141 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2510 transitions. Word has length 132 [2022-12-14 14:15:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:15:24,141 INFO L495 AbstractCegarLoop]: Abstraction has 1904 states and 2510 transitions. [2022-12-14 14:15:24,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-14 14:15:24,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2510 transitions. [2022-12-14 14:15:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-14 14:15:24,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:15:24,145 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:15:24,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 14:15:24,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 14:15:24,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:15:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:15:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash 553659007, now seen corresponding path program 1 times [2022-12-14 14:15:24,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:15:24,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075155703] [2022-12-14 14:15:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:15:24,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:15:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:15:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:15:24,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:15:24,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075155703] [2022-12-14 14:15:24,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075155703] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:15:24,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696530105] [2022-12-14 14:15:24,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:15:24,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:15:24,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:15:24,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:15:24,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 14:15:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:15:24,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:15:24,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:15:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:15:24,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:15:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 14:15:24,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696530105] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:15:24,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [473613696] [2022-12-14 14:15:24,778 INFO L159 IcfgInterpreter]: Started Sifa with 114 locations of interest [2022-12-14 14:15:24,778 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:15:24,778 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:15:24,779 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:15:24,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:15:36,446 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2022-12-14 14:15:36,763 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:16:08,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [473613696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:16:08,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:16:08,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 14:16:08,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577352700] [2022-12-14 14:16:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:16:08,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:16:08,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:16:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:16:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2022-12-14 14:16:08,769 INFO L87 Difference]: Start difference. First operand 1904 states and 2510 transitions. Second operand has 25 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 14:16:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:16:43,857 INFO L93 Difference]: Finished difference Result 2490 states and 3277 transitions. [2022-12-14 14:16:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 14:16:43,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 137 [2022-12-14 14:16:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:16:43,862 INFO L225 Difference]: With dead ends: 2490 [2022-12-14 14:16:43,862 INFO L226 Difference]: Without dead ends: 1382 [2022-12-14 14:16:43,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 62.4s TimeCoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 14:16:43,864 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 67 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:16:43,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3250 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 14:16:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-12-14 14:16:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2022-12-14 14:16:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 859 states have (on average 1.239813736903376) internal successors, (1065), 891 states have internal predecessors, (1065), 362 states have call successors, (362), 159 states have call predecessors, (362), 160 states have return successors, (386), 359 states have call predecessors, (386), 355 states have call successors, (386) [2022-12-14 14:16:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1813 transitions. [2022-12-14 14:16:43,973 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1813 transitions. Word has length 137 [2022-12-14 14:16:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:16:43,973 INFO L495 AbstractCegarLoop]: Abstraction has 1382 states and 1813 transitions. [2022-12-14 14:16:43,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 14:16:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1813 transitions. [2022-12-14 14:16:43,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 14:16:43,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:16:43,976 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:16:43,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 14:16:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:16:44,176 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:16:44,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:16:44,177 INFO L85 PathProgramCache]: Analyzing trace with hash -201440707, now seen corresponding path program 1 times [2022-12-14 14:16:44,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:16:44,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622844511] [2022-12-14 14:16:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:16:44,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:16:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:16:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 14:16:44,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:16:44,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622844511] [2022-12-14 14:16:44,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622844511] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:16:44,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20576315] [2022-12-14 14:16:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:16:44,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:16:44,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:16:44,264 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:16:44,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d90384-3282-4133-a540-09f3c9de934a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 14:16:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:16:44,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:16:44,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:16:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 14:16:44,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:16:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 14:16:44,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20576315] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:16:44,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43239285] [2022-12-14 14:16:44,590 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2022-12-14 14:16:44,590 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:16:44,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:16:44,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:16:44,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:18:26,360 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 489 for LOIs [2022-12-14 14:18:27,462 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 495 for LOIs [2022-12-14 14:18:28,932 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 471 for LOIs [2022-12-14 14:19:01,990 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 461 for LOIs [2022-12-14 14:19:02,299 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-12-14 14:19:03,074 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-12-14 14:19:03,368 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 441 for LOIs [2022-12-14 14:19:03,654 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 14:19:03,950 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-12-14 14:19:08,432 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 431 for LOIs [2022-12-14 14:19:08,707 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-12-14 14:19:08,890 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 289 for LOIs [2022-12-14 14:19:09,067 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 289 for LOIs [2022-12-14 14:19:11,529 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 273 for LOIs [2022-12-14 14:19:12,340 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 255 for LOIs [2022-12-14 14:19:12,941 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 255 for LOIs [2022-12-14 14:19:12,981 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 255 for LOIs [2022-12-14 14:19:13,027 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 259 for LOIs [2022-12-14 14:19:13,148 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:20:07,627 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 727 DAG size of output: 503 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:20:22,225 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 716 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:20:29,646 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 722 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:22:17,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [43239285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:22:17,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:22:17,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [4, 4, 4] total 101 [2022-12-14 14:22:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229952471] [2022-12-14 14:22:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:22:17,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 14:22:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:22:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 14:22:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=9741, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 14:22:17,909 INFO L87 Difference]: Start difference. First operand 1382 states and 1813 transitions. Second operand has 96 states, 64 states have (on average 1.15625) internal successors, (74), 61 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 12 states have return successors, (24), 24 states have call predecessors, (24), 22 states have call successors, (24)