./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:33:48,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:33:48,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:33:48,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:33:48,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:33:48,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:33:48,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:33:48,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:33:48,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:33:48,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:33:48,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:33:48,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:33:48,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:33:48,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:33:48,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:33:48,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:33:48,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:33:48,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:33:48,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:33:48,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:33:48,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:33:48,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:33:48,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:33:48,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:33:48,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:33:48,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:33:48,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:33:48,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:33:48,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:33:48,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:33:48,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:33:48,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:33:48,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:33:48,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:33:48,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:33:48,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:33:49,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:33:49,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:33:49,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:33:49,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:33:49,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:33:49,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:33:49,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:33:49,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:33:49,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:33:49,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:33:49,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:33:49,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:33:49,024 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:33:49,024 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:33:49,024 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:33:49,025 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:33:49,025 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:33:49,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:33:49,025 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:33:49,025 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:33:49,025 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:33:49,026 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:33:49,026 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:33:49,026 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:33:49,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:33:49,027 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:33:49,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:33:49,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:33:49,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:33:49,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:33:49,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:33:49,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:33:49,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:33:49,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:33:49,028 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:33:49,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:33:49,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:33:49,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:33:49,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:33:49,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:33:49,030 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:33:49,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:33:49,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:33:49,030 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:33:49,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:33:49,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:33:49,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:33:49,031 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_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2022-11-25 22:33:49,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:33:49,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:33:49,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:33:49,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:33:49,364 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:33:49,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2022-11-25 22:33:52,256 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:33:52,581 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:33:52,582 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2022-11-25 22:33:52,606 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/data/bc9127831/e5fa2ce9c89d40b79c6e12e185e12eb6/FLAGd51c235a6 [2022-11-25 22:33:52,621 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/data/bc9127831/e5fa2ce9c89d40b79c6e12e185e12eb6 [2022-11-25 22:33:52,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:33:52,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:33:52,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:33:52,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:33:52,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:33:52,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:33:52" (1/1) ... [2022-11-25 22:33:52,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432f95ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:52, skipping insertion in model container [2022-11-25 22:33:52,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:33:52" (1/1) ... [2022-11-25 22:33:52,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:33:52,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:33:53,248 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,250 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,297 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,309 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,310 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,314 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,343 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,345 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,365 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,373 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,378 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,393 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_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2022-11-25 22:33:53,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:33:53,414 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:33:53,503 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,511 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,518 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,524 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,525 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,533 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,539 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,545 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,548 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,551 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,555 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:33:53,566 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_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2022-11-25 22:33:53,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:33:53,617 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:33:53,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53 WrapperNode [2022-11-25 22:33:53,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:33:53,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:33:53,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:33:53,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:33:53,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,744 INFO L138 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2022-11-25 22:33:53,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:33:53,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:33:53,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:33:53,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:33:53,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,846 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:33:53,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:33:53,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:33:53,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:33:53,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (1/1) ... [2022-11-25 22:33:53,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:33:53,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:33:53,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:33:53,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:33:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-25 22:33:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-25 22:33:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-25 22:33:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-25 22:33:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-25 22:33:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-25 22:33:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-25 22:33:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-25 22:33:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-25 22:33:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-25 22:33:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-25 22:33:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-25 22:33:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-25 22:33:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-25 22:33:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-25 22:33:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-25 22:33:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 22:33:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 22:33:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-25 22:33:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-25 22:33:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 22:33:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 22:33:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 22:33:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 22:33:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 22:33:53,991 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 22:33:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-25 22:33:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-25 22:33:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-25 22:33:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-25 22:33:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-25 22:33:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-25 22:33:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 22:33:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 22:33:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 22:33:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 22:33:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 22:33:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-25 22:33:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-25 22:33:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 22:33:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 22:33:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-25 22:33:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-25 22:33:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 22:33:53,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 22:33:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-25 22:33:53,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-25 22:33:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:33:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 22:33:53,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 22:33:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 22:33:53,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 22:33:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-25 22:33:53,999 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-25 22:33:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-25 22:33:54,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-25 22:33:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-25 22:33:54,000 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-25 22:33:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-25 22:33:54,001 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-25 22:33:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 22:33:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 22:33:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 22:33:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 22:33:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 22:33:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 22:33:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-25 22:33:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-25 22:33:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 22:33:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 22:33:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-25 22:33:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-25 22:33:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-25 22:33:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-25 22:33:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-25 22:33:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-25 22:33:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 22:33:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 22:33:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 22:33:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 22:33:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:33:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 22:33:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 22:33:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-25 22:33:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-25 22:33:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-25 22:33:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-25 22:33:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-25 22:33:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-25 22:33:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:33:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:33:54,354 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:33:54,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:33:55,565 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:33:56,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:33:56,232 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:33:56,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:33:56 BoogieIcfgContainer [2022-11-25 22:33:56,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:33:56,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:33:56,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:33:56,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:33:56,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:33:52" (1/3) ... [2022-11-25 22:33:56,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598c9abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:33:56, skipping insertion in model container [2022-11-25 22:33:56,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:33:53" (2/3) ... [2022-11-25 22:33:56,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598c9abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:33:56, skipping insertion in model container [2022-11-25 22:33:56,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:33:56" (3/3) ... [2022-11-25 22:33:56,249 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2022-11-25 22:33:56,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:33:56,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:33:56,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:33:56,388 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;@6d4ff7f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:33:56,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:33:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-25 22:33:56,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 22:33:56,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:56,425 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:56,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:56,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash 773592641, now seen corresponding path program 1 times [2022-11-25 22:33:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:56,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940052722] [2022-11-25 22:33:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:33:57,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:57,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940052722] [2022-11-25 22:33:57,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940052722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:33:57,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:33:57,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:33:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469413136] [2022-11-25 22:33:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:33:57,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:33:57,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:57,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:33:57,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:33:57,137 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:33:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:57,536 INFO L93 Difference]: Finished difference Result 732 states and 1002 transitions. [2022-11-25 22:33:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:33:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2022-11-25 22:33:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:57,560 INFO L225 Difference]: With dead ends: 732 [2022-11-25 22:33:57,560 INFO L226 Difference]: Without dead ends: 377 [2022-11-25 22:33:57,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:33:57,578 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 6 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:57,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1383 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:33:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-25 22:33:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-25 22:33:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 242 states have internal predecessors, (288), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-25 22:33:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2022-11-25 22:33:57,696 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 97 [2022-11-25 22:33:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:57,699 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2022-11-25 22:33:57,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:33:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2022-11-25 22:33:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 22:33:57,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:57,709 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:33:57,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:57,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash 762710508, now seen corresponding path program 1 times [2022-11-25 22:33:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:57,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225480734] [2022-11-25 22:33:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:33:58,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:58,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225480734] [2022-11-25 22:33:58,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225480734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:33:58,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:33:58,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:33:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360711244] [2022-11-25 22:33:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:33:58,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:33:58,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:33:58,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:58,029 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:33:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:58,232 INFO L93 Difference]: Finished difference Result 731 states and 999 transitions. [2022-11-25 22:33:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:33:58,233 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), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 103 [2022-11-25 22:33:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:58,246 INFO L225 Difference]: With dead ends: 731 [2022-11-25 22:33:58,246 INFO L226 Difference]: Without dead ends: 375 [2022-11-25 22:33:58,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:58,255 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 476 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:58,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 442 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:33:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-25 22:33:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2022-11-25 22:33:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 223 states have (on average 1.2690582959641257) internal successors, (283), 240 states have internal predecessors, (283), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2022-11-25 22:33:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 496 transitions. [2022-11-25 22:33:58,303 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 496 transitions. Word has length 103 [2022-11-25 22:33:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:58,305 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 496 transitions. [2022-11-25 22:33:58,306 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), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:33:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 496 transitions. [2022-11-25 22:33:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 22:33:58,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:58,310 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:58,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:33:58,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash 753621541, now seen corresponding path program 1 times [2022-11-25 22:33:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:58,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830707212] [2022-11-25 22:33:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:33:58,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:58,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830707212] [2022-11-25 22:33:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830707212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:33:58,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:33:58,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:33:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317426387] [2022-11-25 22:33:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:33:58,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:33:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:33:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:58,432 INFO L87 Difference]: Start difference. First operand 375 states and 496 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:33:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:58,616 INFO L93 Difference]: Finished difference Result 724 states and 967 transitions. [2022-11-25 22:33:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:33:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2022-11-25 22:33:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:58,621 INFO L225 Difference]: With dead ends: 724 [2022-11-25 22:33:58,621 INFO L226 Difference]: Without dead ends: 374 [2022-11-25 22:33:58,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:58,630 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 463 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:58,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 461 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:33:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-25 22:33:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-25 22:33:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 239 states have internal predecessors, (281), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-25 22:33:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 492 transitions. [2022-11-25 22:33:58,685 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 492 transitions. Word has length 114 [2022-11-25 22:33:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:58,686 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 492 transitions. [2022-11-25 22:33:58,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:33:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 492 transitions. [2022-11-25 22:33:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:33:58,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:58,698 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:58,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:33:58,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:58,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash 446507475, now seen corresponding path program 1 times [2022-11-25 22:33:58,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:58,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627077896] [2022-11-25 22:33:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:58,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:33:58,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:58,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627077896] [2022-11-25 22:33:58,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627077896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:33:58,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:33:58,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:33:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200645696] [2022-11-25 22:33:58,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:33:58,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:33:58,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:33:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:58,843 INFO L87 Difference]: Start difference. First operand 374 states and 492 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:33:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:59,021 INFO L93 Difference]: Finished difference Result 705 states and 926 transitions. [2022-11-25 22:33:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:33:59,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 115 [2022-11-25 22:33:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:59,024 INFO L225 Difference]: With dead ends: 705 [2022-11-25 22:33:59,024 INFO L226 Difference]: Without dead ends: 371 [2022-11-25 22:33:59,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:59,026 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 436 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:59,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 437 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:33:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-25 22:33:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2022-11-25 22:33:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 223 states have (on average 1.210762331838565) internal successors, (270), 234 states have internal predecessors, (270), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-25 22:33:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 475 transitions. [2022-11-25 22:33:59,058 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 475 transitions. Word has length 115 [2022-11-25 22:33:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:59,059 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 475 transitions. [2022-11-25 22:33:59,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:33:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 475 transitions. [2022-11-25 22:33:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 22:33:59,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:59,062 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:59,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:33:59,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1168996932, now seen corresponding path program 1 times [2022-11-25 22:33:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:59,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959309253] [2022-11-25 22:33:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:59,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:33:59,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:59,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959309253] [2022-11-25 22:33:59,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959309253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:33:59,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:33:59,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:33:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588231755] [2022-11-25 22:33:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:33:59,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:33:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:59,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:33:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:59,248 INFO L87 Difference]: Start difference. First operand 371 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:33:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:59,407 INFO L93 Difference]: Finished difference Result 587 states and 745 transitions. [2022-11-25 22:33:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:33:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2022-11-25 22:33:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:59,410 INFO L225 Difference]: With dead ends: 587 [2022-11-25 22:33:59,410 INFO L226 Difference]: Without dead ends: 373 [2022-11-25 22:33:59,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:59,412 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:59,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 843 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:33:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-25 22:33:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-11-25 22:33:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 225 states have (on average 1.208888888888889) internal successors, (272), 236 states have internal predecessors, (272), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-25 22:33:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2022-11-25 22:33:59,443 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 127 [2022-11-25 22:33:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:59,444 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2022-11-25 22:33:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:33:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2022-11-25 22:33:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 22:33:59,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:59,446 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:59,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:33:59,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:59,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 687305607, now seen corresponding path program 1 times [2022-11-25 22:33:59,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:59,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388314311] [2022-11-25 22:33:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:33:59,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:59,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388314311] [2022-11-25 22:33:59,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388314311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:33:59,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:33:59,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:33:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737417252] [2022-11-25 22:33:59,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:33:59,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:33:59,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:33:59,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:59,563 INFO L87 Difference]: Start difference. First operand 373 states and 477 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:33:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:59,734 INFO L93 Difference]: Finished difference Result 746 states and 978 transitions. [2022-11-25 22:33:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:33:59,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 132 [2022-11-25 22:33:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:59,737 INFO L225 Difference]: With dead ends: 746 [2022-11-25 22:33:59,738 INFO L226 Difference]: Without dead ends: 440 [2022-11-25 22:33:59,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:33:59,739 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 76 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:59,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 864 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:33:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-25 22:33:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2022-11-25 22:33:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 273 states have (on average 1.2527472527472527) internal successors, (342), 284 states have internal predecessors, (342), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2022-11-25 22:33:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 575 transitions. [2022-11-25 22:33:59,778 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 575 transitions. Word has length 132 [2022-11-25 22:33:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:59,779 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 575 transitions. [2022-11-25 22:33:59,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:33:59,779 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 575 transitions. [2022-11-25 22:33:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-25 22:33:59,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:59,781 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:59,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:33:59,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1363662011, now seen corresponding path program 1 times [2022-11-25 22:33:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:59,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323848785] [2022-11-25 22:33:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:59,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:33:59,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:33:59,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323848785] [2022-11-25 22:33:59,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323848785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:33:59,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834691041] [2022-11-25 22:33:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:59,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:33:59,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:33:59,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:34:00,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:34:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:00,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:34:00,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:34:00,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:34:00,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834691041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:34:00,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [985793706] [2022-11-25 22:34:00,648 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-11-25 22:34:00,648 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:34:00,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:34:00,657 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:34:00,658 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:35:49,135 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2022-11-25 22:35:50,254 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2022-11-25 22:35:51,658 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 278 for LOIs [2022-11-25 22:35:53,446 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-25 22:35:53,743 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2022-11-25 22:35:54,522 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 455 for LOIs [2022-11-25 22:35:54,813 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 246 for LOIs [2022-11-25 22:35:54,861 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-11-25 22:35:55,147 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 280 for LOIs [2022-11-25 22:35:55,282 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 268 for LOIs [2022-11-25 22:35:55,416 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 266 for LOIs [2022-11-25 22:36:01,014 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 454 for LOIs [2022-11-25 22:36:05,180 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-25 22:36:06,982 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 250 for LOIs [2022-11-25 22:36:07,097 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 234 for LOIs [2022-11-25 22:36:07,134 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:36:15,015 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:20,873 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:34,324 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 455 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:40,933 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 478 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:53,942 WARN L233 SmtUtils]: Spent 11.67s on a formula simplification. DAG size of input: 750 DAG size of output: 565 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:11,364 WARN L233 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 739 DAG size of output: 531 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:24,366 WARN L233 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 745 DAG size of output: 592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:34,228 WARN L233 SmtUtils]: Spent 9.39s on a formula simplification. DAG size of input: 749 DAG size of output: 544 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:54,431 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 516 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:04,406 WARN L233 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 565 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:12,558 WARN L233 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 562 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:48,387 WARN L233 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 469 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:40:54,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [985793706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:54,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:40:54,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [4, 4, 4] total 91 [2022-11-25 22:40:54,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661864198] [2022-11-25 22:40:54,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:54,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-25 22:40:54,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-25 22:40:54,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=7872, Unknown=0, NotChecked=0, Total=8190 [2022-11-25 22:40:54,564 INFO L87 Difference]: Start difference. First operand 435 states and 575 transitions. Second operand has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-25 22:41:03,546 WARN L233 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:12,584 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:21,922 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:31,188 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:40,293 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:49,414 WARN L233 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:58,632 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:07,793 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:24,654 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 495 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:31,420 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 532 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:38,143 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 531 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:44,834 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 529 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:56,179 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 523 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:03,766 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 533 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:11,678 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 525 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:44:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:44:44,205 INFO L93 Difference]: Finished difference Result 1147 states and 1601 transitions. [2022-11-25 22:44:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-25 22:44:44,208 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) Word has length 133 [2022-11-25 22:44:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:44:44,213 INFO L225 Difference]: With dead ends: 1147 [2022-11-25 22:44:44,213 INFO L226 Difference]: Without dead ends: 742 [2022-11-25 22:44:44,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 307 SyntacticMatches, 5 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4619 ImplicationChecksByTransitivity, 415.4s TimeCoverageRelationStatistics Valid=500, Invalid=11710, Unknown=0, NotChecked=0, Total=12210 [2022-11-25 22:44:44,218 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 567 mSDsluCounter, 11344 mSDsCounter, 0 mSdLazyCounter, 19639 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 11800 SdHoareTripleChecker+Invalid, 19693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 19639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:44:44,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 11800 Invalid, 19693 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [54 Valid, 19639 Invalid, 0 Unknown, 0 Unchecked, 100.2s Time] [2022-11-25 22:44:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-25 22:44:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 583. [2022-11-25 22:44:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 387 states have (on average 1.2945736434108528) internal successors, (501), 398 states have internal predecessors, (501), 136 states have call successors, (136), 64 states have call predecessors, (136), 59 states have return successors, (135), 129 states have call predecessors, (135), 135 states have call successors, (135) [2022-11-25 22:44:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 772 transitions. [2022-11-25 22:44:44,499 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 772 transitions. Word has length 133 [2022-11-25 22:44:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:44:44,499 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 772 transitions. [2022-11-25 22:44:44,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-25 22:44:44,500 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 772 transitions. [2022-11-25 22:44:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 22:44:44,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:44:44,503 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:44:44,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 22:44:44,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:44:44,704 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:44:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:44:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash -98183853, now seen corresponding path program 1 times [2022-11-25 22:44:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:44:44,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696337802] [2022-11-25 22:44:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:44:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:44:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:44:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 22:44:44,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:44:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696337802] [2022-11-25 22:44:44,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696337802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:44:44,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:44:44,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:44:44,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117775223] [2022-11-25 22:44:44,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:44:44,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:44:44,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:44:44,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:44:44,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:44:44,837 INFO L87 Difference]: Start difference. First operand 583 states and 772 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:44:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:44:45,515 INFO L93 Difference]: Finished difference Result 1333 states and 1809 transitions. [2022-11-25 22:44:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:44:45,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 134 [2022-11-25 22:44:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:44:45,523 INFO L225 Difference]: With dead ends: 1333 [2022-11-25 22:44:45,524 INFO L226 Difference]: Without dead ends: 929 [2022-11-25 22:44:45,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:44:45,527 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 441 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:44:45,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1133 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:44:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-11-25 22:44:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 927. [2022-11-25 22:44:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 603 states have (on average 1.2885572139303483) internal successors, (777), 621 states have internal predecessors, (777), 226 states have call successors, (226), 102 states have call predecessors, (226), 97 states have return successors, (240), 218 states have call predecessors, (240), 224 states have call successors, (240) [2022-11-25 22:44:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1243 transitions. [2022-11-25 22:44:46,042 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1243 transitions. Word has length 134 [2022-11-25 22:44:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:44:46,042 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 1243 transitions. [2022-11-25 22:44:46,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:44:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1243 transitions. [2022-11-25 22:44:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 22:44:46,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:44:46,051 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:44:46,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 22:44:46,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:44:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:44:46,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2002086776, now seen corresponding path program 1 times [2022-11-25 22:44:46,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:44:46,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728613637] [2022-11-25 22:44:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:44:46,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:44:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:44:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 22:44:46,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:44:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728613637] [2022-11-25 22:44:46,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728613637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:44:46,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:44:46,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:44:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898112826] [2022-11-25 22:44:46,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:44:46,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:44:46,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:44:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:44:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:44:46,162 INFO L87 Difference]: Start difference. First operand 927 states and 1243 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:44:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:44:46,902 INFO L93 Difference]: Finished difference Result 1876 states and 2527 transitions. [2022-11-25 22:44:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:44:46,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2022-11-25 22:44:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:44:46,910 INFO L225 Difference]: With dead ends: 1876 [2022-11-25 22:44:46,911 INFO L226 Difference]: Without dead ends: 1291 [2022-11-25 22:44:46,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:44:46,914 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 440 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:44:46,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1167 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:44:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-11-25 22:44:47,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2022-11-25 22:44:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 809 states have (on average 1.2521631644004945) internal successors, (1013), 835 states have internal predecessors, (1013), 324 states have call successors, (324), 158 states have call predecessors, (324), 155 states have return successors, (377), 319 states have call predecessors, (377), 317 states have call successors, (377) [2022-11-25 22:44:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1714 transitions. [2022-11-25 22:44:47,481 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1714 transitions. Word has length 135 [2022-11-25 22:44:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:44:47,482 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1714 transitions. [2022-11-25 22:44:47,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:44:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1714 transitions. [2022-11-25 22:44:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 22:44:47,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:44:47,486 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:44:47,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 22:44:47,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:44:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:44:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2106639352, now seen corresponding path program 1 times [2022-11-25 22:44:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:44:47,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903966276] [2022-11-25 22:44:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:44:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:44:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:44:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:44:47,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:44:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903966276] [2022-11-25 22:44:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903966276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:44:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334464549] [2022-11-25 22:44:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:44:47,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:44:47,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:44:47,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:44:47,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce39116a-f5de-47d7-bda2-2cbe3fc8e7cc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:44:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:44:48,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:44:48,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:44:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:44:48,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:44:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:44:48,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334464549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:44:48,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534334580] [2022-11-25 22:44:48,216 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2022-11-25 22:44:48,216 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:44:48,217 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:44:48,217 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:44:48,218 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:46:25,695 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2022-11-25 22:46:26,753 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2022-11-25 22:46:28,203 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2022-11-25 22:46:30,056 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-25 22:46:30,346 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2022-11-25 22:46:31,058 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-11-25 22:46:31,334 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2022-11-25 22:46:31,373 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-11-25 22:46:31,660 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 279 for LOIs [2022-11-25 22:46:31,801 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2022-11-25 22:46:32,597 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 283 for LOIs [2022-11-25 22:46:37,594 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2022-11-25 22:46:41,584 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 465 for LOIs [2022-11-25 22:46:44,779 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 253 for LOIs [2022-11-25 22:46:44,858 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-25 22:46:44,898 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2022-11-25 22:46:44,939 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:46:52,611 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:46:58,543 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)