./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:30:32,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:30:32,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:30:32,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:30:32,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:30:32,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:30:32,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:30:32,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:30:32,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:30:32,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:30:32,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:30:32,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:30:32,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:30:32,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:30:32,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:30:32,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:30:32,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:30:32,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:30:32,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:30:32,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:30:32,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:30:32,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:30:32,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:30:32,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:30:32,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:30:32,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:30:32,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:30:32,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:30:32,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:30:32,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:30:32,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:30:32,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:30:32,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:30:32,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:30:32,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:30:32,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:30:32,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:30:32,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:30:32,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:30:32,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:30:32,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:30:32,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:30:32,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:30:32,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:30:32,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:30:32,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:30:32,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:30:32,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:30:32,118 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:30:32,118 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:30:32,118 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:30:32,119 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:30:32,119 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:30:32,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:30:32,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:30:32,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:30:32,120 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:30:32,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:30:32,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:30:32,120 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:30:32,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:30:32,121 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:30:32,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:30:32,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:30:32,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:30:32,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:30:32,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:30:32,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:30:32,122 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:30:32,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:30:32,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:30:32,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:30:32,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:30:32,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:30:32,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:30:32,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:30:32,124 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:30:32,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:30:32,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:30:32,124 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:30:32,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:30:32,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:30:32,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:30:32,125 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_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2022-12-14 15:30:32,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:30:32,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:30:32,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:30:32,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:30:32,328 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:30:32,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-12-14 15:30:34,849 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:30:35,082 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:30:35,082 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-12-14 15:30:35,097 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/data/0cf89443f/dde5e61cb7794460ad38666579acbe4e/FLAG9aefb287a [2022-12-14 15:30:35,108 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/data/0cf89443f/dde5e61cb7794460ad38666579acbe4e [2022-12-14 15:30:35,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:30:35,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:30:35,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:30:35,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:30:35,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:30:35,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160e2f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35, skipping insertion in model container [2022-12-14 15:30:35,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:30:35,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:30:35,307 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,352 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,354 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,360 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,477 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,482 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,495 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_b13de89a-dd47-4436-9c1c-f97c65482eb6/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-12-14 15:30:35,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:30:35,577 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:30:35,589 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,594 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,595 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,598 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,641 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,643 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:30:35,650 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_b13de89a-dd47-4436-9c1c-f97c65482eb6/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-12-14 15:30:35,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:30:35,707 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:30:35,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35 WrapperNode [2022-12-14 15:30:35,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:30:35,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:30:35,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:30:35,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:30:35,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,780 INFO L138 Inliner]: procedures = 128, calls = 209, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 861 [2022-12-14 15:30:35,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:30:35,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:30:35,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:30:35,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:30:35,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:30:35,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:30:35,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:30:35,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:30:35,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (1/1) ... [2022-12-14 15:30:35,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:30:35,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:30:35,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:30:35,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:30:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 15:30:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 15:30:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 15:30:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 15:30:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 15:30:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 15:30:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 15:30:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 15:30:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 15:30:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 15:30:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 15:30:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 15:30:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 15:30:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 15:30:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 15:30:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 15:30:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 15:30:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 15:30:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 15:30:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 15:30:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 15:30:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 15:30:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 15:30:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 15:30:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 15:30:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:30:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 15:30:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 15:30:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 15:30:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 15:30:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 15:30:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 15:30:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 15:30:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 15:30:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 15:30:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 15:30:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 15:30:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 15:30:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 15:30:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 15:30:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 15:30:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 15:30:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 15:30:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 15:30:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 15:30:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 15:30:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:30:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 15:30:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 15:30:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:30:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:30:36,049 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:30:36,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:30:36,576 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:30:36,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:30:36,846 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:30:36,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:30:36 BoogieIcfgContainer [2022-12-14 15:30:36,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:30:36,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:30:36,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:30:36,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:30:36,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:30:35" (1/3) ... [2022-12-14 15:30:36,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f49b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:30:36, skipping insertion in model container [2022-12-14 15:30:36,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:30:35" (2/3) ... [2022-12-14 15:30:36,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f49b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:30:36, skipping insertion in model container [2022-12-14 15:30:36,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:30:36" (3/3) ... [2022-12-14 15:30:36,854 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2022-12-14 15:30:36,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:30:36,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:30:36,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:30:36,911 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;@51e9c208, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:30:36,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:30:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 15:30:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 15:30:36,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:36,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:30:36,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash -879823802, now seen corresponding path program 1 times [2022-12-14 15:30:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:36,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231443637] [2022-12-14 15:30:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:36,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:30:37,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:37,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231443637] [2022-12-14 15:30:37,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231443637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:37,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:37,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:30:37,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127404745] [2022-12-14 15:30:37,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:37,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:30:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:30:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:30:37,203 INFO L87 Difference]: Start difference. First operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 15:30:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:37,294 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2022-12-14 15:30:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:30:37,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 89 [2022-12-14 15:30:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:37,304 INFO L225 Difference]: With dead ends: 285 [2022-12-14 15:30:37,304 INFO L226 Difference]: Without dead ends: 181 [2022-12-14 15:30:37,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:30:37,309 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:37,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-12-14 15:30:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-12-14 15:30:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 15:30:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 239 transitions. [2022-12-14 15:30:37,346 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 239 transitions. Word has length 89 [2022-12-14 15:30:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:37,347 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 239 transitions. [2022-12-14 15:30:37,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 15:30:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 239 transitions. [2022-12-14 15:30:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 15:30:37,350 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:37,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:30:37,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:30:37,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:37,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1022497941, now seen corresponding path program 1 times [2022-12-14 15:30:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670528651] [2022-12-14 15:30:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:37,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:30:37,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:37,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670528651] [2022-12-14 15:30:37,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670528651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:37,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:37,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98965595] [2022-12-14 15:30:37,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:37,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:37,528 INFO L87 Difference]: Start difference. First operand 181 states and 239 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 15:30:37,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:37,623 INFO L93 Difference]: Finished difference Result 281 states and 358 transitions. [2022-12-14 15:30:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 90 [2022-12-14 15:30:37,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:37,626 INFO L225 Difference]: With dead ends: 281 [2022-12-14 15:30:37,626 INFO L226 Difference]: Without dead ends: 183 [2022-12-14 15:30:37,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:37,628 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:37,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-14 15:30:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-12-14 15:30:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 111 states have internal predecessors, (140), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 15:30:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2022-12-14 15:30:37,649 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 90 [2022-12-14 15:30:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:37,649 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2022-12-14 15:30:37,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 15:30:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2022-12-14 15:30:37,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 15:30:37,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:37,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:30:37,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:30:37,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:37,654 INFO L85 PathProgramCache]: Analyzing trace with hash -586659288, now seen corresponding path program 1 times [2022-12-14 15:30:37,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:37,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772755643] [2022-12-14 15:30:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:37,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:30:37,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772755643] [2022-12-14 15:30:37,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772755643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:30:37,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:30:37,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:30:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140229682] [2022-12-14 15:30:37,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:30:37,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:30:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:30:37,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:30:37,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:37,782 INFO L87 Difference]: Start difference. First operand 183 states and 241 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 15:30:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:30:37,871 INFO L93 Difference]: Finished difference Result 396 states and 541 transitions. [2022-12-14 15:30:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:30:37,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2022-12-14 15:30:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:30:37,874 INFO L225 Difference]: With dead ends: 396 [2022-12-14 15:30:37,874 INFO L226 Difference]: Without dead ends: 231 [2022-12-14 15:30:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:30:37,884 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 57 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:30:37,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 431 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:30:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-12-14 15:30:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-12-14 15:30:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.3785714285714286) internal successors, (193), 143 states have internal predecessors, (193), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-12-14 15:30:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 316 transitions. [2022-12-14 15:30:37,906 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 316 transitions. Word has length 95 [2022-12-14 15:30:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:30:37,907 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 316 transitions. [2022-12-14 15:30:37,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 15:30:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 316 transitions. [2022-12-14 15:30:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 15:30:37,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:30:37,910 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:30:37,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:30:37,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:30:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:30:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1083775887, now seen corresponding path program 1 times [2022-12-14 15:30:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:30:37,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308883054] [2022-12-14 15:30:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:30:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:30:38,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:30:38,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308883054] [2022-12-14 15:30:38,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308883054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:30:38,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332275740] [2022-12-14 15:30:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:30:38,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:30:38,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:30:38,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:30:38,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:30:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:30:38,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:30:38,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:30:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:30:38,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:30:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:30:38,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332275740] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:30:38,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [850412438] [2022-12-14 15:30:38,474 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-12-14 15:30:38,474 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:30:38,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:30:38,481 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:30:38,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:31:08,216 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 15:31:08,535 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-12-14 15:31:19,335 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 15:31:19,622 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-12-14 15:32:06,059 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-12-14 15:32:06,727 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-12-14 15:32:06,766 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 443 for LOIs [2022-12-14 15:32:07,044 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-12-14 15:32:07,130 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 433 for LOIs [2022-12-14 15:32:07,371 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-12-14 15:32:07,986 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 247 for LOIs [2022-12-14 15:32:08,024 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:34:18,567 WARN L233 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 640 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:34:38,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [850412438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:34:38,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:34:38,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [4, 4, 4] total 69 [2022-12-14 15:34:38,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061820671] [2022-12-14 15:34:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:34:38,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-14 15:34:38,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:34:38,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-14 15:34:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4452, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 15:34:38,362 INFO L87 Difference]: Start difference. First operand 226 states and 316 transitions. Second operand has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-14 15:35:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:35:17,223 INFO L93 Difference]: Finished difference Result 643 states and 949 transitions. [2022-12-14 15:35:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-14 15:35:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 96 [2022-12-14 15:35:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:35:17,226 INFO L225 Difference]: With dead ends: 643 [2022-12-14 15:35:17,226 INFO L226 Difference]: Without dead ends: 435 [2022-12-14 15:35:17,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 221 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 163.2s TimeCoverageRelationStatistics Valid=303, Invalid=5703, Unknown=0, NotChecked=0, Total=6006 [2022-12-14 15:35:17,229 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 262 mSDsluCounter, 7132 mSDsCounter, 0 mSdLazyCounter, 9465 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 7412 SdHoareTripleChecker+Invalid, 9502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:35:17,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 7412 Invalid, 9502 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [37 Valid, 9465 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2022-12-14 15:35:17,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-12-14 15:35:17,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 352. [2022-12-14 15:35:17,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 235 states have (on average 1.4085106382978723) internal successors, (331), 239 states have internal predecessors, (331), 84 states have call successors, (84), 33 states have call predecessors, (84), 32 states have return successors, (84), 81 states have call predecessors, (84), 83 states have call successors, (84) [2022-12-14 15:35:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 499 transitions. [2022-12-14 15:35:17,367 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 499 transitions. Word has length 96 [2022-12-14 15:35:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:35:17,368 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 499 transitions. [2022-12-14 15:35:17,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-14 15:35:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 499 transitions. [2022-12-14 15:35:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 15:35:17,370 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:35:17,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:35:17,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:35:17,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:35:17,572 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:35:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:35:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1452137099, now seen corresponding path program 1 times [2022-12-14 15:35:17,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:35:17,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733849555] [2022-12-14 15:35:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:35:17,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:35:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:35:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 15:35:17,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:35:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733849555] [2022-12-14 15:35:17,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733849555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:35:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069178027] [2022-12-14 15:35:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:35:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:35:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:35:17,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:35:17,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:35:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:35:17,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:35:17,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:35:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 15:35:17,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:35:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 15:35:17,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069178027] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:35:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [20147297] [2022-12-14 15:35:18,000 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-12-14 15:35:18,000 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:35:18,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:35:18,001 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:35:18,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:35:46,187 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 15:35:46,474 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-12-14 15:35:58,105 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 15:35:58,391 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-12-14 15:36:46,171 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 439 for LOIs [2022-12-14 15:36:48,208 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 444 for LOIs [2022-12-14 15:36:48,472 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-12-14 15:36:48,536 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-12-14 15:36:48,573 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-12-14 15:36:49,204 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-12-14 15:36:49,242 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 247 for LOIs [2022-12-14 15:36:49,280 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:38:37,697 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 610 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:38:43,966 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 610 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:39:11,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [20147297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:39:11,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:39:11,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [4, 4, 4] total 71 [2022-12-14 15:39:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447712207] [2022-12-14 15:39:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:39:11,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-12-14 15:39:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:39:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-12-14 15:39:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=4733, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 15:39:11,818 INFO L87 Difference]: Start difference. First operand 352 states and 499 transitions. Second operand has 66 states, 43 states have (on average 1.186046511627907) internal successors, (51), 41 states have internal predecessors, (51), 20 states have call successors, (21), 12 states have call predecessors, (21), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-14 15:40:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:40:11,822 INFO L93 Difference]: Finished difference Result 563 states and 789 transitions. [2022-12-14 15:40:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 15:40:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 43 states have (on average 1.186046511627907) internal successors, (51), 41 states have internal predecessors, (51), 20 states have call successors, (21), 12 states have call predecessors, (21), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 101 [2022-12-14 15:40:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:40:11,825 INFO L225 Difference]: With dead ends: 563 [2022-12-14 15:40:11,825 INFO L226 Difference]: Without dead ends: 443 [2022-12-14 15:40:11,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 233 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 176.6s TimeCoverageRelationStatistics Valid=378, Invalid=6932, Unknown=0, NotChecked=0, Total=7310 [2022-12-14 15:40:11,827 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 296 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 8959 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 6930 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 8959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:40:11,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 6930 Invalid, 9008 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [49 Valid, 8959 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2022-12-14 15:40:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-12-14 15:40:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 345. [2022-12-14 15:40:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 230 states have (on average 1.4043478260869566) internal successors, (323), 234 states have internal predecessors, (323), 81 states have call successors, (81), 34 states have call predecessors, (81), 33 states have return successors, (81), 78 states have call predecessors, (81), 80 states have call successors, (81) [2022-12-14 15:40:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 485 transitions. [2022-12-14 15:40:11,986 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 485 transitions. Word has length 101 [2022-12-14 15:40:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:40:11,986 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 485 transitions. [2022-12-14 15:40:11,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 43 states have (on average 1.186046511627907) internal successors, (51), 41 states have internal predecessors, (51), 20 states have call successors, (21), 12 states have call predecessors, (21), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-14 15:40:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 485 transitions. [2022-12-14 15:40:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 15:40:11,988 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:40:11,988 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:40:11,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:40:12,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:40:12,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:40:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:40:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2009199358, now seen corresponding path program 1 times [2022-12-14 15:40:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:40:12,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273453730] [2022-12-14 15:40:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:40:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:40:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:40:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 15:40:12,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:40:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273453730] [2022-12-14 15:40:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273453730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:40:12,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:40:12,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:40:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938739541] [2022-12-14 15:40:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:40:12,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:40:12,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:40:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:40:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:40:12,306 INFO L87 Difference]: Start difference. First operand 345 states and 485 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 15:40:12,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:40:12,638 INFO L93 Difference]: Finished difference Result 804 states and 1176 transitions. [2022-12-14 15:40:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:40:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2022-12-14 15:40:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:40:12,640 INFO L225 Difference]: With dead ends: 804 [2022-12-14 15:40:12,640 INFO L226 Difference]: Without dead ends: 485 [2022-12-14 15:40:12,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:40:12,641 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 55 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:40:12,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 445 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:40:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-12-14 15:40:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 478. [2022-12-14 15:40:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 338 states have (on average 1.4792899408284024) internal successors, (500), 342 states have internal predecessors, (500), 106 states have call successors, (106), 34 states have call predecessors, (106), 33 states have return successors, (106), 103 states have call predecessors, (106), 105 states have call successors, (106) [2022-12-14 15:40:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 712 transitions. [2022-12-14 15:40:12,846 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 712 transitions. Word has length 101 [2022-12-14 15:40:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:40:12,846 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 712 transitions. [2022-12-14 15:40:12,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 15:40:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 712 transitions. [2022-12-14 15:40:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 15:40:12,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:40:12,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:40:12,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:40:12,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:40:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:40:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash 835629664, now seen corresponding path program 1 times [2022-12-14 15:40:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:40:12,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426930292] [2022-12-14 15:40:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:40:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:40:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:40:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:40:12,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:40:12,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426930292] [2022-12-14 15:40:12,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426930292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:40:12,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256632310] [2022-12-14 15:40:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:40:12,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:40:12,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:40:12,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:40:12,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b13de89a-dd47-4436-9c1c-f97c65482eb6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:40:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:40:13,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:40:13,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:40:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:40:13,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:40:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:40:13,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256632310] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:40:13,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164821153] [2022-12-14 15:40:13,192 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-12-14 15:40:13,192 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:40:13,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:40:13,193 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:40:13,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:40:41,959 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 15:40:42,247 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-12-14 15:40:53,193 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 15:40:53,474 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-12-14 15:41:51,030 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-12-14 15:41:51,699 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-12-14 15:41:51,737 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 444 for LOIs [2022-12-14 15:41:52,010 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-12-14 15:41:52,076 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-12-14 15:41:52,114 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-12-14 15:41:52,764 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 439 for LOIs [2022-12-14 15:41:53,011 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2022-12-14 15:41:53,049 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:44:00,311 WARN L233 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 640 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:44:17,471 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 643 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:44:28,089 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 641 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:44:34,533 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 669 DAG size of output: 468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:44:45,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1164821153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:44:45,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:44:45,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [4, 4, 4] total 74 [2022-12-14 15:44:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180364996] [2022-12-14 15:44:45,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:44:45,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-14 15:44:45,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:44:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-14 15:44:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=5120, Unknown=0, NotChecked=0, Total=5402 [2022-12-14 15:44:45,091 INFO L87 Difference]: Start difference. First operand 478 states and 712 transitions. Second operand has 69 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 43 states have internal predecessors, (52), 20 states have call successors, (21), 13 states have call predecessors, (21), 11 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19)