./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur --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 c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 --- 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-38b53e6 [2022-11-26 01:08:27,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:08:27,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:08:27,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:08:27,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:08:27,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:08:27,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:08:27,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:08:27,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:08:27,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:08:27,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:08:27,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:08:27,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:08:27,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:08:27,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:08:27,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:08:27,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:08:27,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:08:27,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:08:27,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:08:27,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:08:27,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:08:27,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:08:27,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:08:27,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:08:27,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:08:27,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:08:27,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:08:27,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:08:27,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:08:27,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:08:27,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:08:27,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:08:27,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:08:27,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:08:27,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:08:27,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:08:27,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:08:27,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:08:27,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:08:27,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:08:27,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 01:08:27,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:08:27,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:08:27,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:08:27,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:08:27,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:08:27,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:08:27,851 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:08:27,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:08:27,852 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:08:27,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:08:27,853 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:08:27,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:08:27,854 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:08:27,854 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:08:27,854 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:08:27,855 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:08:27,855 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:08:27,855 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:08:27,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:08:27,856 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:08:27,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:08:27,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:08:27,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:08:27,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:08:27,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:08:27,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:08:27,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:08:27,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:08:27,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:08:27,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:08:27,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:08:27,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:08:27,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:08:27,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:08:27,861 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:08:27,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:08:27,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:08:27,862 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:08:27,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:08:27,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:08:27,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:08:27,863 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_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 [2022-11-26 01:08:28,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:08:28,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:08:28,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:08:28,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:08:28,225 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:08:28,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-11-26 01:08:31,237 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:08:31,712 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:08:31,712 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-11-26 01:08:31,741 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/data/f704009e9/4ebe9889e3184b95894c1109d038132d/FLAG7079a1a84 [2022-11-26 01:08:31,759 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/data/f704009e9/4ebe9889e3184b95894c1109d038132d [2022-11-26 01:08:31,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:08:31,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:08:31,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:08:31,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:08:31,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:08:31,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:08:31" (1/1) ... [2022-11-26 01:08:31,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad0511d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:31, skipping insertion in model container [2022-11-26 01:08:31,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:08:31" (1/1) ... [2022-11-26 01:08:31,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:08:31,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:08:32,073 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,083 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,208 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_de2b86f6-a141-4f6c-a116-aa2f86d0c115/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-11-26 01:08:32,420 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,424 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,429 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,494 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,500 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,502 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,507 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,521 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,523 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:08:32,538 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:08:32,551 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,552 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,577 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_de2b86f6-a141-4f6c-a116-aa2f86d0c115/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-11-26 01:08:32,631 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,632 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,635 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,677 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,680 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,680 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,685 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,713 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,714 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:08:32,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:08:32,767 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:08:32,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32 WrapperNode [2022-11-26 01:08:32,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:08:32,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:08:32,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:08:32,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:08:32,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,910 INFO L138 Inliner]: procedures = 152, calls = 290, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1339 [2022-11-26 01:08:32,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:08:32,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:08:32,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:08:32,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:08:32,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:08:32,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:08:32,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:08:32,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:08:32,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (1/1) ... [2022-11-26 01:08:32,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:08:33,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:08:33,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:08:33,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:08:33,093 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-26 01:08:33,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-26 01:08:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-26 01:08:33,095 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-26 01:08:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-26 01:08:33,095 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-26 01:08:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-26 01:08:33,096 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-26 01:08:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-26 01:08:33,096 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-26 01:08:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-26 01:08:33,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-26 01:08:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-26 01:08:33,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-26 01:08:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-26 01:08:33,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-26 01:08:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-26 01:08:33,098 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-26 01:08:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-26 01:08:33,098 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-26 01:08:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-26 01:08:33,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-26 01:08:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-26 01:08:33,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-26 01:08:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-26 01:08:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-26 01:08:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-26 01:08:33,101 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-26 01:08:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-26 01:08:33,103 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-26 01:08:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-26 01:08:33,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-26 01:08:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-26 01:08:33,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-26 01:08:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-26 01:08:33,104 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-26 01:08:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-26 01:08:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-26 01:08:33,105 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-26 01:08:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-26 01:08:33,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-26 01:08:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-26 01:08:33,106 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-26 01:08:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-26 01:08:33,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-26 01:08:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-26 01:08:33,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-26 01:08:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:08:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-26 01:08:33,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-26 01:08:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-26 01:08:33,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-26 01:08:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-26 01:08:33,109 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-26 01:08:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-26 01:08:33,109 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-26 01:08:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-26 01:08:33,110 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-26 01:08:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-26 01:08:33,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-26 01:08:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-26 01:08:33,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-26 01:08:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-26 01:08:33,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-26 01:08:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-26 01:08:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-26 01:08:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-26 01:08:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-26 01:08:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-26 01:08:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-26 01:08:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-26 01:08:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-26 01:08:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-26 01:08:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-26 01:08:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-26 01:08:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-26 01:08:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-26 01:08:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-26 01:08:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-26 01:08:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-26 01:08:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:08:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-26 01:08:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-26 01:08:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-26 01:08:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-26 01:08:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-26 01:08:33,118 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-26 01:08:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-26 01:08:33,118 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-26 01:08:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:08:33,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:08:33,356 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:08:33,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:08:34,910 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:08:35,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:08:35,853 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:08:35,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:08:35 BoogieIcfgContainer [2022-11-26 01:08:35,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:08:35,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:08:35,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:08:35,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:08:35,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:08:31" (1/3) ... [2022-11-26 01:08:35,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25739574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:08:35, skipping insertion in model container [2022-11-26 01:08:35,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:32" (2/3) ... [2022-11-26 01:08:35,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25739574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:08:35, skipping insertion in model container [2022-11-26 01:08:35,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:08:35" (3/3) ... [2022-11-26 01:08:35,874 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_productSimulator.cil.c [2022-11-26 01:08:35,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:08:35,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:08:36,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:08:36,010 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;@33540668, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:08:36,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:08:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-26 01:08:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-26 01:08:36,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:36,058 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] [2022-11-26 01:08:36,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:08:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1875424870, now seen corresponding path program 1 times [2022-11-26 01:08:36,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:36,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225573650] [2022-11-26 01:08:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:36,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:08:36,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:36,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225573650] [2022-11-26 01:08:36,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225573650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:36,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:36,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:08:36,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552854725] [2022-11-26 01:08:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 01:08:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 01:08:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:08:36,764 INFO L87 Difference]: Start difference. First operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 01:08:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:37,051 INFO L93 Difference]: Finished difference Result 610 states and 828 transitions. [2022-11-26 01:08:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 01:08:37,054 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 122 [2022-11-26 01:08:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:37,070 INFO L225 Difference]: With dead ends: 610 [2022-11-26 01:08:37,071 INFO L226 Difference]: Without dead ends: 381 [2022-11-26 01:08:37,082 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 [2022-11-26 01:08:37,086 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:37,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:08:37,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-26 01:08:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-26 01:08:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-26 01:08:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 519 transitions. [2022-11-26 01:08:37,184 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 519 transitions. Word has length 122 [2022-11-26 01:08:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:37,191 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 519 transitions. [2022-11-26 01:08:37,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 01:08:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 519 transitions. [2022-11-26 01:08:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-26 01:08:37,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:37,196 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, 1, 1, 1] [2022-11-26 01:08:37,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:08:37,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:08:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1792078331, now seen corresponding path program 1 times [2022-11-26 01:08:37,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:37,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380211365] [2022-11-26 01:08:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:37,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 01:08:37,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:37,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380211365] [2022-11-26 01:08:37,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380211365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:37,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:37,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:08:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784604601] [2022-11-26 01:08:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:37,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:08:37,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:08:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:37,636 INFO L87 Difference]: Start difference. First operand 381 states and 519 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 01:08:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:37,842 INFO L93 Difference]: Finished difference Result 606 states and 808 transitions. [2022-11-26 01:08:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:08:37,843 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 114 [2022-11-26 01:08:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:37,852 INFO L225 Difference]: With dead ends: 606 [2022-11-26 01:08:37,852 INFO L226 Difference]: Without dead ends: 383 [2022-11-26 01:08:37,854 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 [2022-11-26 01:08:37,855 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:37,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 933 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:08:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-26 01:08:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-11-26 01:08:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 246 states have internal predecessors, (298), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-26 01:08:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 521 transitions. [2022-11-26 01:08:37,892 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 521 transitions. Word has length 114 [2022-11-26 01:08:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:37,892 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 521 transitions. [2022-11-26 01:08:37,893 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 01:08:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 521 transitions. [2022-11-26 01:08:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-26 01:08:37,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:37,896 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] [2022-11-26 01:08:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:08:37,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:08:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash 197624083, now seen corresponding path program 1 times [2022-11-26 01:08:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:37,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850880201] [2022-11-26 01:08:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 01:08:38,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850880201] [2022-11-26 01:08:38,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850880201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:38,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:38,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:08:38,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597917401] [2022-11-26 01:08:38,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:38,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:08:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:08:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:38,055 INFO L87 Difference]: Start difference. First operand 383 states and 521 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 01:08:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:38,351 INFO L93 Difference]: Finished difference Result 765 states and 1056 transitions. [2022-11-26 01:08:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:08:38,352 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 119 [2022-11-26 01:08:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:38,356 INFO L225 Difference]: With dead ends: 765 [2022-11-26 01:08:38,356 INFO L226 Difference]: Without dead ends: 450 [2022-11-26 01:08:38,358 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 [2022-11-26 01:08:38,359 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 84 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:38,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 950 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:08:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-26 01:08:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2022-11-26 01:08:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 275 states have (on average 1.3636363636363635) internal successors, (375), 296 states have internal predecessors, (375), 126 states have call successors, (126), 43 states have call predecessors, (126), 43 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-26 01:08:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 626 transitions. [2022-11-26 01:08:38,423 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 626 transitions. Word has length 119 [2022-11-26 01:08:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:38,424 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 626 transitions. [2022-11-26 01:08:38,425 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 01:08:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 626 transitions. [2022-11-26 01:08:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-26 01:08:38,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:38,432 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] [2022-11-26 01:08:38,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:08:38,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:08:38,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:38,433 INFO L85 PathProgramCache]: Analyzing trace with hash 567398175, now seen corresponding path program 1 times [2022-11-26 01:08:38,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:38,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468737473] [2022-11-26 01:08:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:08:38,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468737473] [2022-11-26 01:08:38,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468737473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:08:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80742097] [2022-11-26 01:08:38,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:38,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:08:38,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:08:38,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:08:38,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:08:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:39,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:08:39,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:08:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:08:39,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:08:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:08:39,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80742097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:08:39,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965783128] [2022-11-26 01:08:39,462 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-11-26 01:08:39,462 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:08:39,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:08:39,477 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:08:39,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:08:55,435 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-26 01:08:55,739 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:09:03,390 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 463 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:08,966 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:58,292 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 516 DAG size of output: 513 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:58,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1965783128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:09:58,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:09:58,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-26 01:09:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841913208] [2022-11-26 01:09:58,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:09:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-26 01:09:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:09:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-26 01:09:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-26 01:09:58,305 INFO L87 Difference]: Start difference. First operand 445 states and 626 transitions. Second operand has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-26 01:10:06,352 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:14,679 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:22,994 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:31,051 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:39,324 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:47,720 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:55,692 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:04,183 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:15,707 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 514 DAG size of output: 511 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:17,729 INFO L93 Difference]: Finished difference Result 903 states and 1259 transitions. [2022-11-26 01:11:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-26 01:11:17,730 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 129 [2022-11-26 01:11:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:17,733 INFO L225 Difference]: With dead ends: 903 [2022-11-26 01:11:17,734 INFO L226 Difference]: Without dead ends: 475 [2022-11-26 01:11:17,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 137.1s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-26 01:11:17,737 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 123 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:17,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1175 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-26 01:11:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-26 01:11:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 467. [2022-11-26 01:11:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 290 states have (on average 1.3413793103448275) internal successors, (389), 311 states have internal predecessors, (389), 126 states have call successors, (126), 50 states have call predecessors, (126), 50 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-26 01:11:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 640 transitions. [2022-11-26 01:11:17,878 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 640 transitions. Word has length 129 [2022-11-26 01:11:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:17,878 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 640 transitions. [2022-11-26 01:11:17,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-26 01:11:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 640 transitions. [2022-11-26 01:11:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-26 01:11:17,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:17,882 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] [2022-11-26 01:11:17,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:11:18,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:11:18,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:11:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1532918332, now seen corresponding path program 1 times [2022-11-26 01:11:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:18,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705781585] [2022-11-26 01:11:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:18,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 01:11:18,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705781585] [2022-11-26 01:11:18,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705781585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:11:18,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136704852] [2022-11-26 01:11:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:18,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:11:18,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:11:18,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:11:18,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:11:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:18,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 01:11:18,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-26 01:11:19,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:11:19,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136704852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:19,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 01:11:19,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-26 01:11:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075298558] [2022-11-26 01:11:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:19,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:11:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:11:19,039 INFO L87 Difference]: Start difference. First operand 467 states and 640 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-26 01:11:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:19,290 INFO L93 Difference]: Finished difference Result 679 states and 928 transitions. [2022-11-26 01:11:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 124 [2022-11-26 01:11:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:19,298 INFO L225 Difference]: With dead ends: 679 [2022-11-26 01:11:19,299 INFO L226 Difference]: Without dead ends: 463 [2022-11-26 01:11:19,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:11:19,308 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 421 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:19,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 452 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-26 01:11:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-11-26 01:11:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 289 states have (on average 1.3321799307958477) internal successors, (385), 308 states have internal predecessors, (385), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-26 01:11:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 630 transitions. [2022-11-26 01:11:19,462 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 630 transitions. Word has length 124 [2022-11-26 01:11:19,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:19,464 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 630 transitions. [2022-11-26 01:11:19,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-26 01:11:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 630 transitions. [2022-11-26 01:11:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 01:11:19,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:19,470 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] [2022-11-26 01:11:19,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 01:11:19,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:11:19,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:11:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1264978221, now seen corresponding path program 1 times [2022-11-26 01:11:19,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:19,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684557499] [2022-11-26 01:11:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:19,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:11:19,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:19,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684557499] [2022-11-26 01:11:19,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684557499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:11:19,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466083353] [2022-11-26 01:11:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:19,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:11:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:11:19,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:11:19,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 01:11:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:20,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:11:20,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:11:20,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:11:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:11:20,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466083353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:11:20,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106946670] [2022-11-26 01:11:20,554 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2022-11-26 01:11:20,555 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:11:20,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:11:20,556 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:11:20,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:11:35,193 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-26 01:11:35,496 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:11:43,215 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 463 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:49,159 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:36,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1106946670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:12:36,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:12:36,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-26 01:12:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681760056] [2022-11-26 01:12:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:12:36,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-26 01:12:36,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:12:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-26 01:12:36,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-26 01:12:36,463 INFO L87 Difference]: Start difference. First operand 463 states and 630 transitions. Second operand has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-26 01:12:44,152 WARN L233 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:51,796 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:59,276 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:06,901 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:14,491 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:22,148 WARN L233 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:29,854 WARN L233 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:37,732 WARN L233 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:13:43,435 INFO L93 Difference]: Finished difference Result 875 states and 1198 transitions. [2022-11-26 01:13:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-26 01:13:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 133 [2022-11-26 01:13:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:13:43,438 INFO L225 Difference]: With dead ends: 875 [2022-11-26 01:13:43,439 INFO L226 Difference]: Without dead ends: 455 [2022-11-26 01:13:43,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 120.6s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-26 01:13:43,442 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 37 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:13:43,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3322 Invalid, 1231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-26 01:13:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-26 01:13:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2022-11-26 01:13:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 281 states have (on average 1.3202846975088969) internal successors, (371), 300 states have internal predecessors, (371), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-26 01:13:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 616 transitions. [2022-11-26 01:13:43,526 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 616 transitions. Word has length 133 [2022-11-26 01:13:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:13:43,526 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 616 transitions. [2022-11-26 01:13:43,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-26 01:13:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 616 transitions. [2022-11-26 01:13:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-26 01:13:43,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:13:43,528 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] [2022-11-26 01:13:43,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 01:13:43,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-26 01:13:43,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:13:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:13:43,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1639422148, now seen corresponding path program 1 times [2022-11-26 01:13:43,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:13:43,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789646228] [2022-11-26 01:13:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:13:43,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:13:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:13:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-26 01:13:43,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:13:43,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789646228] [2022-11-26 01:13:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789646228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:13:43,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:13:43,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:13:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490694251] [2022-11-26 01:13:43,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:13:43,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:13:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:13:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:13:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:13:43,843 INFO L87 Difference]: Start difference. First operand 455 states and 616 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 01:13:44,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:13:44,062 INFO L93 Difference]: Finished difference Result 855 states and 1166 transitions. [2022-11-26 01:13:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:13:44,063 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 135 [2022-11-26 01:13:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:13:44,066 INFO L225 Difference]: With dead ends: 855 [2022-11-26 01:13:44,066 INFO L226 Difference]: Without dead ends: 452 [2022-11-26 01:13:44,067 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 [2022-11-26 01:13:44,068 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 449 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:13:44,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 448 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:13:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-26 01:13:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-11-26 01:13:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 281 states have (on average 1.2562277580071175) internal successors, (353), 293 states have internal predecessors, (353), 120 states have call successors, (120), 50 states have call predecessors, (120), 50 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2022-11-26 01:13:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 592 transitions. [2022-11-26 01:13:44,175 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 592 transitions. Word has length 135 [2022-11-26 01:13:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:13:44,176 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 592 transitions. [2022-11-26 01:13:44,176 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 01:13:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 592 transitions. [2022-11-26 01:13:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-26 01:13:44,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:13:44,179 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:13:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 01:13:44,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:13:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:13:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -212878243, now seen corresponding path program 1 times [2022-11-26 01:13:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:13:44,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114001905] [2022-11-26 01:13:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:13:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:13:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:13:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:13:44,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:13:44,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114001905] [2022-11-26 01:13:44,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114001905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:13:44,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918264829] [2022-11-26 01:13:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:13:44,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:13:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:13:44,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:13:44,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 01:13:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:13:44,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:13:44,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:13:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:13:44,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:13:44,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918264829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:13:44,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 01:13:44,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-26 01:13:44,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105981111] [2022-11-26 01:13:44,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:13:44,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:13:44,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:13:44,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:13:44,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:13:44,947 INFO L87 Difference]: Start difference. First operand 452 states and 592 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-26 01:13:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:13:45,289 INFO L93 Difference]: Finished difference Result 1258 states and 1695 transitions. [2022-11-26 01:13:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:13:45,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 147 [2022-11-26 01:13:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:13:45,295 INFO L225 Difference]: With dead ends: 1258 [2022-11-26 01:13:45,296 INFO L226 Difference]: Without dead ends: 851 [2022-11-26 01:13:45,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:13:45,299 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 398 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:13:45,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 954 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:13:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-26 01:13:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 849. [2022-11-26 01:13:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 531 states have (on average 1.2598870056497176) internal successors, (669), 551 states have internal predecessors, (669), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-11-26 01:13:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1131 transitions. [2022-11-26 01:13:45,496 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1131 transitions. Word has length 147 [2022-11-26 01:13:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:13:45,498 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1131 transitions. [2022-11-26 01:13:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-26 01:13:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1131 transitions. [2022-11-26 01:13:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-26 01:13:45,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:13:45,504 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:13:45,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 01:13:45,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:13:45,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:13:45,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:13:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1125238850, now seen corresponding path program 1 times [2022-11-26 01:13:45,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:13:45,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349182574] [2022-11-26 01:13:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:13:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:13:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:13:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:13:45,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:13:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349182574] [2022-11-26 01:13:45,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349182574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:13:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069412524] [2022-11-26 01:13:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:13:45,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:13:45,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:13:45,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:13:45,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 01:13:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:13:46,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:13:46,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:13:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:13:46,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:13:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:13:46,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069412524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:13:46,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1653466383] [2022-11-26 01:13:46,464 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-11-26 01:13:46,464 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:13:46,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:13:46,466 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:13:46,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:14:00,637 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-26 01:14:00,919 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:14:08,237 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 463 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:14:13,721 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:08,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1653466383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:15:08,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:15:08,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-26 01:15:08,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831414924] [2022-11-26 01:15:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:15:08,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-26 01:15:08,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:15:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-26 01:15:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-26 01:15:08,871 INFO L87 Difference]: Start difference. First operand 849 states and 1131 transitions. Second operand has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-26 01:15:16,274 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:23,904 WARN L233 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:31,631 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:39,626 WARN L233 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:47,836 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:55,971 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:16:04,209 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:16:12,163 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:16:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:16:14,759 INFO L93 Difference]: Finished difference Result 1651 states and 2209 transitions. [2022-11-26 01:16:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-26 01:16:14,761 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 148 [2022-11-26 01:16:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:16:14,766 INFO L225 Difference]: With dead ends: 1651 [2022-11-26 01:16:14,767 INFO L226 Difference]: Without dead ends: 848 [2022-11-26 01:16:14,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 129.6s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 01:16:14,772 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 56 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:16:14,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1478 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-26 01:16:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-26 01:16:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2022-11-26 01:16:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 530 states have (on average 1.2547169811320755) internal successors, (665), 550 states have internal predecessors, (665), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-11-26 01:16:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1127 transitions. [2022-11-26 01:16:14,955 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1127 transitions. Word has length 148 [2022-11-26 01:16:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:16:14,956 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1127 transitions. [2022-11-26 01:16:14,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-26 01:16:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1127 transitions. [2022-11-26 01:16:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-26 01:16:14,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:16:14,962 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:16:14,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 01:16:15,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:16:15,171 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:16:15,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:16:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 5200269, now seen corresponding path program 1 times [2022-11-26 01:16:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:16:15,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755003744] [2022-11-26 01:16:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:16:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:16:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:16:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:16:15,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:16:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755003744] [2022-11-26 01:16:15,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755003744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:16:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650301912] [2022-11-26 01:16:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:16:15,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:16:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:16:15,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:16:15,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2b86f6-a141-4f6c-a116-aa2f86d0c115/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 01:16:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:16:15,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:16:15,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:16:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:16:15,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:16:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-26 01:16:16,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650301912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:16:16,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [338336308] [2022-11-26 01:16:16,084 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2022-11-26 01:16:16,084 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:16:16,085 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:16:16,085 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:16:16,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:18:34,482 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 511 for LOIs [2022-11-26 01:18:35,717 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 517 for LOIs [2022-11-26 01:18:37,379 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 281 for LOIs [2022-11-26 01:18:39,519 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-26 01:18:39,813 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 452 for LOIs [2022-11-26 01:18:42,278 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-11-26 01:18:42,580 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 249 for LOIs [2022-11-26 01:18:42,624 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-26 01:18:42,932 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 283 for LOIs [2022-11-26 01:18:43,096 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 271 for LOIs [2022-11-26 01:18:43,254 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 269 for LOIs [2022-11-26 01:18:48,680 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 454 for LOIs [2022-11-26 01:18:57,836 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-26 01:19:02,771 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 254 for LOIs [2022-11-26 01:19:02,818 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-11-26 01:19:02,901 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 444 for LOIs [2022-11-26 01:19:03,551 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:19:11,065 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 463 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:19:16,790 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 471 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:20:22,503 WARN L233 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 530 DAG size of output: 522 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:20:29,950 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 534 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:20:55,222 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 751 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:21:18,822 WARN L233 SmtUtils]: Spent 13.30s on a formula simplification. DAG size of input: 740 DAG size of output: 592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:21:30,281 WARN L233 SmtUtils]: Spent 10.59s on a formula simplification. DAG size of input: 746 DAG size of output: 569 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:21:39,137 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 750 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)