./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:15:57,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:15:57,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:15:58,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:15:58,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:15:58,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:15:58,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:15:58,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:15:58,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:15:58,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:15:58,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:15:58,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:15:58,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:15:58,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:15:58,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:15:58,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:15:58,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:15:58,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:15:58,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:15:58,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:15:58,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:15:58,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:15:58,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:15:58,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:15:58,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:15:58,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:15:58,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:15:58,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:15:58,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:15:58,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:15:58,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:15:58,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:15:58,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:15:58,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:15:58,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:15:58,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:15:58,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:15:58,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:15:58,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:15:58,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:15:58,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:15:58,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:15:58,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:15:58,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:15:58,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:15:58,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:15:58,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:15:58,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:15:58,060 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:15:58,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:15:58,061 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:15:58,061 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:15:58,062 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:15:58,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:15:58,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:15:58,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:15:58,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:15:58,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:15:58,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:15:58,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:15:58,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:15:58,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:15:58,064 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:15:58,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:15:58,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:15:58,064 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:15:58,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:15:58,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:15:58,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:15:58,065 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_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 [2022-12-14 11:15:58,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:15:58,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:15:58,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:15:58,253 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:15:58,253 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:15:58,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2022-12-14 11:16:00,818 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:16:01,044 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:16:01,045 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2022-12-14 11:16:01,067 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/data/b2de8943b/1f92bf888fa445619c2b729ac3722705/FLAG22d61b264 [2022-12-14 11:16:01,077 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/data/b2de8943b/1f92bf888fa445619c2b729ac3722705 [2022-12-14 11:16:01,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:16:01,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:16:01,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:16:01,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:16:01,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:16:01,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9946a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01, skipping insertion in model container [2022-12-14 11:16:01,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:16:01,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:16:01,288 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,331 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,332 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,335 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,340 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_94614f75-cead-4ad5-8c77-6a34f156dcfe/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-12-14 11:16:01,445 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,447 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,453 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:16:01,464 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:16:01,486 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,488 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,489 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,491 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,494 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_94614f75-cead-4ad5-8c77-6a34f156dcfe/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-12-14 11:16:01,526 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,528 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,531 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:16:01,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:16:01,551 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:16:01,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01 WrapperNode [2022-12-14 11:16:01,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:16:01,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:16:01,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:16:01,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:16:01,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,617 INFO L138 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 949 [2022-12-14 11:16:01,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:16:01,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:16:01,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:16:01,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:16:01,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:16:01,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:16:01,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:16:01,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:16:01,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (1/1) ... [2022-12-14 11:16:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:16:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:01,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:16:01,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:16:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 11:16:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 11:16:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 11:16:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 11:16:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 11:16:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 11:16:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 11:16:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 11:16:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 11:16:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 11:16:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 11:16:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 11:16:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 11:16:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 11:16:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 11:16:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 11:16:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 11:16:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:16:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 11:16:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 11:16:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 11:16:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 11:16:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 11:16:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 11:16:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 11:16:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 11:16:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 11:16:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 11:16:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 11:16:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 11:16:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 11:16:01,739 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 11:16:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 11:16:01,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 11:16:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 11:16:01,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 11:16:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:16:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 11:16:01,740 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 11:16:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:16:01,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:16:01,903 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:16:01,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:16:02,425 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:16:02,779 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:16:02,779 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:16:02,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:16:02 BoogieIcfgContainer [2022-12-14 11:16:02,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:16:02,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:16:02,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:16:02,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:16:02,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:16:01" (1/3) ... [2022-12-14 11:16:02,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4723cc8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:16:02, skipping insertion in model container [2022-12-14 11:16:02,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:01" (2/3) ... [2022-12-14 11:16:02,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4723cc8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:16:02, skipping insertion in model container [2022-12-14 11:16:02,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:16:02" (3/3) ... [2022-12-14 11:16:02,787 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2022-12-14 11:16:02,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:16:02,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:16:02,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:16:02,850 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;@207505bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:16:02,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:16:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 99 states have internal predecessors, (130), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-12-14 11:16:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 11:16:02,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:02,869 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 11:16:02,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:16:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2101963505, now seen corresponding path program 1 times [2022-12-14 11:16:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:02,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792148174] [2022-12-14 11:16:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:16:03,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:03,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792148174] [2022-12-14 11:16:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792148174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:03,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:03,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:16:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343139037] [2022-12-14 11:16:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:03,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:16:03,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:16:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:16:03,131 INFO L87 Difference]: Start difference. First operand has 163 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 99 states have internal predecessors, (130), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:16:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:03,228 INFO L93 Difference]: Finished difference Result 243 states and 322 transitions. [2022-12-14 11:16:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:16:03,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2022-12-14 11:16:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:03,239 INFO L225 Difference]: With dead ends: 243 [2022-12-14 11:16:03,239 INFO L226 Difference]: Without dead ends: 160 [2022-12-14 11:16:03,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:16:03,246 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:03,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-14 11:16:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-12-14 11:16:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 95 states have (on average 1.305263157894737) internal successors, (124), 96 states have internal predecessors, (124), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-14 11:16:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 215 transitions. [2022-12-14 11:16:03,284 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 215 transitions. Word has length 68 [2022-12-14 11:16:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:03,285 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 215 transitions. [2022-12-14 11:16:03,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:16:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 215 transitions. [2022-12-14 11:16:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 11:16:03,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:03,288 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 11:16:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:16:03,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:16:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 367297991, now seen corresponding path program 1 times [2022-12-14 11:16:03,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:03,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386169541] [2022-12-14 11:16:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:16:03,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:03,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386169541] [2022-12-14 11:16:03,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386169541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:03,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:03,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:16:03,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659601744] [2022-12-14 11:16:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:03,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:16:03,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:16:03,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:03,494 INFO L87 Difference]: Start difference. First operand 160 states and 215 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:16:03,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:03,595 INFO L93 Difference]: Finished difference Result 239 states and 310 transitions. [2022-12-14 11:16:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:16:03,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-12-14 11:16:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:03,597 INFO L225 Difference]: With dead ends: 239 [2022-12-14 11:16:03,597 INFO L226 Difference]: Without dead ends: 162 [2022-12-14 11:16:03,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:03,598 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:03,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-14 11:16:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-12-14 11:16:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 98 states have internal predecessors, (126), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-14 11:16:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2022-12-14 11:16:03,610 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 69 [2022-12-14 11:16:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:03,610 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2022-12-14 11:16:03,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:16:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2022-12-14 11:16:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 11:16:03,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:03,612 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 11:16:03,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:16:03,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:16:03,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1915889867, now seen corresponding path program 1 times [2022-12-14 11:16:03,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:03,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579165275] [2022-12-14 11:16:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:03,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:16:03,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:03,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579165275] [2022-12-14 11:16:03,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579165275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:03,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:03,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:16:03,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407181894] [2022-12-14 11:16:03,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:03,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:16:03,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:03,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:16:03,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:03,695 INFO L87 Difference]: Start difference. First operand 162 states and 217 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:16:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:03,783 INFO L93 Difference]: Finished difference Result 354 states and 493 transitions. [2022-12-14 11:16:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:16:03,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-12-14 11:16:03,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:03,786 INFO L225 Difference]: With dead ends: 354 [2022-12-14 11:16:03,786 INFO L226 Difference]: Without dead ends: 210 [2022-12-14 11:16:03,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:03,788 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 57 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:03,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 379 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-12-14 11:16:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2022-12-14 11:16:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 129 states have (on average 1.3875968992248062) internal successors, (179), 130 states have internal predecessors, (179), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-12-14 11:16:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 292 transitions. [2022-12-14 11:16:03,800 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 292 transitions. Word has length 74 [2022-12-14 11:16:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:03,800 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 292 transitions. [2022-12-14 11:16:03,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:16:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 292 transitions. [2022-12-14 11:16:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 11:16:03,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:03,802 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 11:16:03,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:16:03,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:16:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -932851711, now seen corresponding path program 1 times [2022-12-14 11:16:03,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:03,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402666499] [2022-12-14 11:16:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:16:03,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:03,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402666499] [2022-12-14 11:16:03,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402666499] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:03,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677874993] [2022-12-14 11:16:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:03,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:03,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:03,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:03,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:16:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:04,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:16:04,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:16:04,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:16:04,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677874993] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:04,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1603085498] [2022-12-14 11:16:04,282 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-12-14 11:16:04,282 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:16:04,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:16:04,291 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:16:04,292 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:16:28,628 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 11:16:28,919 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:16:29,241 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 11:16:30,821 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 11:16:30,890 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-12-14 11:16:40,939 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-12-14 11:16:40,970 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-12-14 11:16:41,011 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 447 for LOIs [2022-12-14 11:16:41,619 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:17:58,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1603085498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:17:58,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:17:58,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-12-14 11:17:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778519302] [2022-12-14 11:17:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:17:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 11:17:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:17:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 11:17:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 11:17:58,948 INFO L87 Difference]: Start difference. First operand 205 states and 292 transitions. Second operand has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 11:18:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:18:19,588 INFO L93 Difference]: Finished difference Result 539 states and 816 transitions. [2022-12-14 11:18:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 11:18:19,589 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 75 [2022-12-14 11:18:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:18:19,592 INFO L225 Difference]: With dead ends: 539 [2022-12-14 11:18:19,592 INFO L226 Difference]: Without dead ends: 352 [2022-12-14 11:18:19,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 83.3s TimeCoverageRelationStatistics Valid=173, Invalid=2479, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 11:18:19,594 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 231 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 5335 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:18:19,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 4754 Invalid, 5364 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [29 Valid, 5335 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-12-14 11:18:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-12-14 11:18:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 298. [2022-12-14 11:18:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 203 states have (on average 1.438423645320197) internal successors, (292), 205 states have internal predecessors, (292), 70 states have call successors, (70), 25 states have call predecessors, (70), 24 states have return successors, (70), 67 states have call predecessors, (70), 69 states have call successors, (70) [2022-12-14 11:18:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 432 transitions. [2022-12-14 11:18:19,705 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 432 transitions. Word has length 75 [2022-12-14 11:18:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:18:19,706 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 432 transitions. [2022-12-14 11:18:19,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 11:18:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 432 transitions. [2022-12-14 11:18:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 11:18:19,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:19,710 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 11:18:19,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:18:19,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:18:19,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:19,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1019458820, now seen corresponding path program 1 times [2022-12-14 11:18:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715052778] [2022-12-14 11:18:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:18:20,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:20,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715052778] [2022-12-14 11:18:20,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715052778] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:18:20,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413767556] [2022-12-14 11:18:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:20,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:18:20,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:18:20,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:18:20,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:18:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:20,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:18:20,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:18:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:18:20,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:18:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:18:20,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413767556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:18:20,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1485055471] [2022-12-14 11:18:20,315 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 11:18:20,315 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:18:20,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:18:20,316 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:18:20,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:18:42,433 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 11:18:42,722 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 11:18:44,241 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 11:18:44,280 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:18:44,564 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2022-12-14 11:19:13,064 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-12-14 11:19:13,096 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-12-14 11:19:13,136 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-12-14 11:19:13,771 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 440 for LOIs [2022-12-14 11:19:14,016 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2022-12-14 11:19:14,054 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:20:33,751 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 612 DAG size of output: 471 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:20:54,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1485055471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:20:54,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:20:54,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 11:20:54,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046469872] [2022-12-14 11:20:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:20:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 11:20:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:20:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 11:20:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3114, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 11:20:54,925 INFO L87 Difference]: Start difference. First operand 298 states and 432 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 11:21:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:21:19,164 INFO L93 Difference]: Finished difference Result 444 states and 637 transitions. [2022-12-14 11:21:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-14 11:21:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 80 [2022-12-14 11:21:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:21:19,166 INFO L225 Difference]: With dead ends: 444 [2022-12-14 11:21:19,166 INFO L226 Difference]: Without dead ends: 365 [2022-12-14 11:21:19,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 106.8s TimeCoverageRelationStatistics Valid=228, Invalid=3554, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 11:21:19,167 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 187 mSDsluCounter, 5346 mSDsCounter, 0 mSdLazyCounter, 6762 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 6767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:21:19,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 5567 Invalid, 6767 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5 Valid, 6762 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2022-12-14 11:21:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-12-14 11:21:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 306. [2022-12-14 11:21:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 208 states have (on average 1.4278846153846154) internal successors, (297), 210 states have internal predecessors, (297), 71 states have call successors, (71), 27 states have call predecessors, (71), 26 states have return successors, (71), 68 states have call predecessors, (71), 70 states have call successors, (71) [2022-12-14 11:21:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 439 transitions. [2022-12-14 11:21:19,296 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 439 transitions. Word has length 80 [2022-12-14 11:21:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:21:19,296 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 439 transitions. [2022-12-14 11:21:19,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 11:21:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 439 transitions. [2022-12-14 11:21:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 11:21:19,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:21:19,298 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 11:21:19,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:21:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:21:19,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:21:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:21:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2101713434, now seen corresponding path program 1 times [2022-12-14 11:21:19,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:21:19,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899265853] [2022-12-14 11:21:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:21:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:21:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:21:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:21:19,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:21:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899265853] [2022-12-14 11:21:19,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899265853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:21:19,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:21:19,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:21:19,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210787440] [2022-12-14 11:21:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:21:19,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:21:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:21:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:21:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:21:19,604 INFO L87 Difference]: Start difference. First operand 306 states and 439 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:21:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:21:19,882 INFO L93 Difference]: Finished difference Result 726 states and 1084 transitions. [2022-12-14 11:21:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:21:19,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-12-14 11:21:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:21:19,884 INFO L225 Difference]: With dead ends: 726 [2022-12-14 11:21:19,884 INFO L226 Difference]: Without dead ends: 446 [2022-12-14 11:21:19,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:21:19,885 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 55 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:21:19,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 395 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:21:19,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-14 11:21:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 439. [2022-12-14 11:21:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 316 states have (on average 1.5) internal successors, (474), 318 states have internal predecessors, (474), 96 states have call successors, (96), 27 states have call predecessors, (96), 26 states have return successors, (96), 93 states have call predecessors, (96), 95 states have call successors, (96) [2022-12-14 11:21:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 666 transitions. [2022-12-14 11:21:20,074 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 666 transitions. Word has length 80 [2022-12-14 11:21:20,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:21:20,075 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 666 transitions. [2022-12-14 11:21:20,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:21:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 666 transitions. [2022-12-14 11:21:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 11:21:20,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:21:20,078 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 11:21:20,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:21:20,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:21:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:21:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash 58399021, now seen corresponding path program 1 times [2022-12-14 11:21:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:21:20,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627691996] [2022-12-14 11:21:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:21:20,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:21:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:21:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:21:20,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:21:20,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627691996] [2022-12-14 11:21:20,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627691996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:21:20,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163145023] [2022-12-14 11:21:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:21:20,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:21:20,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:21:20,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:21:20,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:21:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:21:20,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:21:20,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:21:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:21:20,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:21:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:21:20,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163145023] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:21:20,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516981082] [2022-12-14 11:21:20,412 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 11:21:20,412 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:21:20,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:21:20,413 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:21:20,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:21:52,304 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 11:21:52,584 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 11:21:52,883 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:22:29,248 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 584 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:22:40,044 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 566 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:22:45,594 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 562 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:22:52,274 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 564 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:22:57,729 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 560 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:23:00,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [516981082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:23:00,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:23:00,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 11:23:00,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178596065] [2022-12-14 11:23:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:23:00,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 11:23:00,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:23:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 11:23:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:23:00,077 INFO L87 Difference]: Start difference. First operand 439 states and 666 transitions. Second operand has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 11:23:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:23:25,769 INFO L93 Difference]: Finished difference Result 824 states and 1285 transitions. [2022-12-14 11:23:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 11:23:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 81 [2022-12-14 11:23:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:23:25,773 INFO L225 Difference]: With dead ends: 824 [2022-12-14 11:23:25,773 INFO L226 Difference]: Without dead ends: 547 [2022-12-14 11:23:25,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 86.2s TimeCoverageRelationStatistics Valid=200, Invalid=1206, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 11:23:25,775 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 180 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:23:25,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 2883 Invalid, 2137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 11:23:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-12-14 11:23:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 471. [2022-12-14 11:23:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 344 states have (on average 1.497093023255814) internal successors, (515), 348 states have internal predecessors, (515), 99 states have call successors, (99), 28 states have call predecessors, (99), 27 states have return successors, (99), 94 states have call predecessors, (99), 98 states have call successors, (99) [2022-12-14 11:23:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 713 transitions. [2022-12-14 11:23:26,025 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 713 transitions. Word has length 81 [2022-12-14 11:23:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:23:26,025 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 713 transitions. [2022-12-14 11:23:26,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 11:23:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 713 transitions. [2022-12-14 11:23:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 11:23:26,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:23:26,027 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 11:23:26,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:23:26,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:23:26,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:23:26,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:23:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash -736400892, now seen corresponding path program 1 times [2022-12-14 11:23:26,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:23:26,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360263847] [2022-12-14 11:23:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:23:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:23:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:23:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:23:26,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:23:26,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360263847] [2022-12-14 11:23:26,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360263847] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:23:26,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297537206] [2022-12-14 11:23:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:23:26,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:23:26,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:23:26,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:23:26,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:23:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:23:26,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:23:26,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:23:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:23:26,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:23:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:23:26,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297537206] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:23:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493002662] [2022-12-14 11:23:26,626 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-12-14 11:23:26,627 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:23:26,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:23:26,627 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:23:26,627 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:25:19,981 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 11:25:20,277 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-12-14 11:25:20,574 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-12-14 11:25:20,901 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 218 for LOIs [2022-12-14 11:25:20,959 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:25:21,237 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:26:20,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1493002662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:26:20,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:26:20,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 11:26:20,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591684832] [2022-12-14 11:26:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:26:20,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 11:26:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:26:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 11:26:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 11:26:20,052 INFO L87 Difference]: Start difference. First operand 471 states and 713 transitions. Second operand has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 11:26:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:26:41,851 INFO L93 Difference]: Finished difference Result 861 states and 1338 transitions. [2022-12-14 11:26:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 11:26:41,852 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 84 [2022-12-14 11:26:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:26:41,854 INFO L225 Difference]: With dead ends: 861 [2022-12-14 11:26:41,854 INFO L226 Difference]: Without dead ends: 584 [2022-12-14 11:26:41,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 71.3s TimeCoverageRelationStatistics Valid=195, Invalid=1697, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 11:26:41,855 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 170 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:26:41,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 3300 Invalid, 3197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-12-14 11:26:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-12-14 11:26:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 511. [2022-12-14 11:26:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 376 states have (on average 1.4893617021276595) internal successors, (560), 382 states have internal predecessors, (560), 104 states have call successors, (104), 31 states have call predecessors, (104), 30 states have return successors, (104), 97 states have call predecessors, (104), 103 states have call successors, (104) [2022-12-14 11:26:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 768 transitions. [2022-12-14 11:26:42,287 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 768 transitions. Word has length 84 [2022-12-14 11:26:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:26:42,288 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 768 transitions. [2022-12-14 11:26:42,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 11:26:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 768 transitions. [2022-12-14 11:26:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 11:26:42,289 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:26:42,289 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 11:26:42,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 11:26:42,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 11:26:42,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:26:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:26:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -716544293, now seen corresponding path program 1 times [2022-12-14 11:26:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:26:42,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452242574] [2022-12-14 11:26:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:26:42,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:26:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:26:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:26:42,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:26:42,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452242574] [2022-12-14 11:26:42,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452242574] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:26:42,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994043105] [2022-12-14 11:26:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:26:42,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:26:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:26:42,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:26:42,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94614f75-cead-4ad5-8c77-6a34f156dcfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:26:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:26:42,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:26:42,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:26:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:26:42,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:26:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:26:42,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994043105] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:26:42,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245160636] [2022-12-14 11:26:42,798 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 11:26:42,798 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:26:42,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:26:42,798 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:26:42,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:27:22,103 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 11:27:22,389 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:27:22,665 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 470 for LOIs [2022-12-14 11:27:50,985 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 448 for LOIs [2022-12-14 11:27:51,267 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 468 for LOIs [2022-12-14 11:28:30,090 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-12-14 11:28:30,313 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 11:28:30,352 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 240 for LOIs [2022-12-14 11:28:30,456 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:29:15,613 WARN L233 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 600 DAG size of output: 474 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)