./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/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_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V --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 --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:56:33,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:56:33,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:56:33,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:56:33,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:56:33,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:56:33,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:56:33,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:56:33,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:56:33,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:56:33,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:56:33,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:56:33,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:56:33,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:56:33,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:56:33,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:56:33,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:56:33,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:56:33,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:56:33,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:56:33,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:56:33,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:56:33,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:56:33,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:56:33,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:56:33,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:56:33,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:56:33,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:56:33,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:56:33,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:56:33,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:56:33,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:56:33,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:56:33,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:56:33,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:56:33,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:56:33,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:56:33,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:56:33,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:56:33,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:56:33,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:56:33,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:56:33,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:56:33,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:56:33,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:56:33,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:56:33,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:56:33,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:56:33,408 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:56:33,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:56:33,409 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:56:33,409 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:56:33,409 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:56:33,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:56:33,410 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:56:33,410 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:56:33,411 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:56:33,411 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:56:33,411 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:56:33,412 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:56:33,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:56:33,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:56:33,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:56:33,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:56:33,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:56:33,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:56:33,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:56:33,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:56:33,415 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:56:33,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:56:33,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:56:33,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:56:33,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:56:33,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:56:33,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:56:33,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:56:33,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:56:33,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:56:33,419 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:56:33,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:56:33,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:56:33,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:56:33,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:56:33,420 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 [2021-11-23 01:56:33,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:56:33,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:56:33,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:56:33,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:56:33,767 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:56:33,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2021-11-23 01:56:33,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/data/2d206545d/9ed64e54ab1243dd844218ff9c7eca91/FLAGc516b06c1 [2021-11-23 01:56:34,652 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:56:34,653 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2021-11-23 01:56:34,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/data/2d206545d/9ed64e54ab1243dd844218ff9c7eca91/FLAGc516b06c1 [2021-11-23 01:56:34,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/data/2d206545d/9ed64e54ab1243dd844218ff9c7eca91 [2021-11-23 01:56:34,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:56:34,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:56:34,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:56:34,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:56:34,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:56:34,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:34" (1/1) ... [2021-11-23 01:56:34,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7c4553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:34, skipping insertion in model container [2021-11-23 01:56:34,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:34" (1/1) ... [2021-11-23 01:56:34,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:56:34,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:56:35,378 WARN L230 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_487e4329-71a6-443b-8e83-25d987291ae4/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2021-11-23 01:56:35,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:56:35,626 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:56:35,684 WARN L230 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_487e4329-71a6-443b-8e83-25d987291ae4/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2021-11-23 01:56:35,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:56:35,853 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:56:35,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35 WrapperNode [2021-11-23 01:56:35,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:56:35,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:56:35,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:56:35,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:56:35,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:35,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,040 INFO L137 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 949 [2021-11-23 01:56:36,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:56:36,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:56:36,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:56:36,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:56:36,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:56:36,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:56:36,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:56:36,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:56:36,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (1/1) ... [2021-11-23 01:56:36,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:56:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:56:36,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:56:36,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:56:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 01:56:36,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 01:56:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 01:56:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 01:56:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 01:56:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 01:56:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 01:56:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 01:56:36,255 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 01:56:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 01:56:36,255 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 01:56:36,255 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 01:56:36,255 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 01:56:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 01:56:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 01:56:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 01:56:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 01:56:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:56:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 01:56:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 01:56:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 01:56:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 01:56:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 01:56:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 01:56:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 01:56:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 01:56:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-11-23 01:56:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-11-23 01:56:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 01:56:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 01:56:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 01:56:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 01:56:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 01:56:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 01:56:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 01:56:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 01:56:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 01:56:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 01:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:56:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:56:36,519 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:56:36,522 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:56:37,540 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:56:38,073 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:56:38,073 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:56:38,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:38 BoogieIcfgContainer [2021-11-23 01:56:38,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:56:38,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:56:38,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:56:38,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:56:38,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:56:34" (1/3) ... [2021-11-23 01:56:38,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2276eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:38, skipping insertion in model container [2021-11-23 01:56:38,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:35" (2/3) ... [2021-11-23 01:56:38,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2276eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:38, skipping insertion in model container [2021-11-23 01:56:38,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:38" (3/3) ... [2021-11-23 01:56:38,094 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2021-11-23 01:56:38,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:56:38,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:56:38,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:56:38,193 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:56:38,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:56:38,239 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) [2021-11-23 01:56:38,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 01:56:38,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:38,254 INFO L514 BasicCegarLoop]: 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] [2021-11-23 01:56:38,254 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:56:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:38,262 INFO L85 PathProgramCache]: Analyzing trace with hash 106465906, now seen corresponding path program 1 times [2021-11-23 01:56:38,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:38,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412792375] [2021-11-23 01:56:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:38,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:56:38,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:56:38,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412792375] [2021-11-23 01:56:38,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412792375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:38,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:38,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:56:38,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671021138] [2021-11-23 01:56:38,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:38,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:56:38,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:56:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:56:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:56:38,764 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) [2021-11-23 01:56:38,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:38,960 INFO L93 Difference]: Finished difference Result 243 states and 322 transitions. [2021-11-23 01:56:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:56:38,963 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 [2021-11-23 01:56:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:38,976 INFO L225 Difference]: With dead ends: 243 [2021-11-23 01:56:38,976 INFO L226 Difference]: Without dead ends: 160 [2021-11-23 01:56:38,982 INFO L932 BasicCegarLoop]: 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 [2021-11-23 01:56:38,986 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2021-11-23 01:56:39,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-23 01:56:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-23 01:56:39,082 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) [2021-11-23 01:56:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 215 transitions. [2021-11-23 01:56:39,089 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 215 transitions. Word has length 68 [2021-11-23 01:56:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:39,091 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 215 transitions. [2021-11-23 01:56:39,092 INFO L471 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) [2021-11-23 01:56:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 215 transitions. [2021-11-23 01:56:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 01:56:39,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:39,100 INFO L514 BasicCegarLoop]: 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] [2021-11-23 01:56:39,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:56:39,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:56:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash -766850154, now seen corresponding path program 1 times [2021-11-23 01:56:39,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:39,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966569251] [2021-11-23 01:56:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:39,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:56:39,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:56:39,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966569251] [2021-11-23 01:56:39,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966569251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:39,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:39,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:39,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194613715] [2021-11-23 01:56:39,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:39,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:56:39,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:56:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:56:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:39,270 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) [2021-11-23 01:56:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:39,402 INFO L93 Difference]: Finished difference Result 239 states and 310 transitions. [2021-11-23 01:56:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:56:39,403 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 [2021-11-23 01:56:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:39,407 INFO L225 Difference]: With dead ends: 239 [2021-11-23 01:56:39,407 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 01:56:39,410 INFO L932 BasicCegarLoop]: 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 [2021-11-23 01:56:39,412 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 212 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 [2021-11-23 01:56:39,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 01:56:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-23 01:56:39,441 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) [2021-11-23 01:56:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2021-11-23 01:56:39,444 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 69 [2021-11-23 01:56:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:39,445 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2021-11-23 01:56:39,445 INFO L471 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) [2021-11-23 01:56:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2021-11-23 01:56:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 01:56:39,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:39,452 INFO L514 BasicCegarLoop]: 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] [2021-11-23 01:56:39,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:56:39,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:56:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1805419571, now seen corresponding path program 1 times [2021-11-23 01:56:39,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:39,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988826782] [2021-11-23 01:56:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:39,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:56:39,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:56:39,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988826782] [2021-11-23 01:56:39,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988826782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:39,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:39,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:39,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89957516] [2021-11-23 01:56:39,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:39,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:56:39,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:56:39,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:56:39,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:39,604 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) [2021-11-23 01:56:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:39,722 INFO L93 Difference]: Finished difference Result 354 states and 493 transitions. [2021-11-23 01:56:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:56:39,723 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 [2021-11-23 01:56:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:39,727 INFO L225 Difference]: With dead ends: 354 [2021-11-23 01:56:39,727 INFO L226 Difference]: Without dead ends: 210 [2021-11-23 01:56:39,729 INFO L932 BasicCegarLoop]: 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 [2021-11-23 01:56:39,731 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 57 mSDsluCounter, 206 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 [2021-11-23 01:56:39,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 379 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-23 01:56:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2021-11-23 01:56:39,781 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) [2021-11-23 01:56:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 292 transitions. [2021-11-23 01:56:39,789 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 292 transitions. Word has length 74 [2021-11-23 01:56:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:39,791 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 292 transitions. [2021-11-23 01:56:39,791 INFO L471 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) [2021-11-23 01:56:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 292 transitions. [2021-11-23 01:56:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 01:56:39,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:39,812 INFO L514 BasicCegarLoop]: 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] [2021-11-23 01:56:39,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:56:39,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:56:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash 267407983, now seen corresponding path program 1 times [2021-11-23 01:56:39,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:39,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879037353] [2021-11-23 01:56:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:39,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:56:39,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:56:39,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879037353] [2021-11-23 01:56:39,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879037353] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:56:39,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559602069] [2021-11-23 01:56:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:39,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:56:39,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:56:39,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:56:40,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:56:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:40,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:56:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:56:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:56:40,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:56:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:56:40,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559602069] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:56:40,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [932087104] [2021-11-23 01:56:40,887 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2021-11-23 01:56:40,887 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:56:40,894 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:56:40,901 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:56:40,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:57:11,006 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 01:57:11,359 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 01:57:11,817 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2021-11-23 01:57:14,656 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 01:57:14,731 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2021-11-23 01:57:27,631 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2021-11-23 01:57:27,678 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-23 01:57:27,722 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 447 for LOIs [2021-11-23 01:57:28,314 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:57:39,873 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:57:45,725 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:58:08,693 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 486 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:58:15,066 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 498 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:58:21,572 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 508 DAG size of output: 290 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:58:33,170 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 563 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:58:53,650 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 447 DAG size of output: 306 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:59:00,628 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 462 DAG size of output: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:59:32,442 WARN L227 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 582 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:59:41,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [932087104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:41,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:59:41,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2021-11-23 01:59:41,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880342750] [2021-11-23 01:59:41,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:41,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 01:59:41,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:59:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 01:59:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 01:59:41,857 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) [2021-11-23 02:00:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:10,785 INFO L93 Difference]: Finished difference Result 539 states and 816 transitions. [2021-11-23 02:00:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 02:00:10,786 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 [2021-11-23 02:00:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:10,792 INFO L225 Difference]: With dead ends: 539 [2021-11-23 02:00:10,793 INFO L226 Difference]: Without dead ends: 352 [2021-11-23 02:00:10,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 143.9s TimeCoverageRelationStatistics Valid=173, Invalid=2479, Unknown=0, NotChecked=0, Total=2652 [2021-11-23 02:00:10,797 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 247 mSDsluCounter, 4698 mSDsCounter, 0 mSdLazyCounter, 5291 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 5330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 5291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:10,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 4798 Invalid, 5330 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [39 Valid, 5291 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2021-11-23 02:00:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-23 02:00:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 298. [2021-11-23 02:00:10,974 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) [2021-11-23 02:00:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 432 transitions. [2021-11-23 02:00:10,983 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 432 transitions. Word has length 75 [2021-11-23 02:00:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:10,985 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 432 transitions. [2021-11-23 02:00:10,986 INFO L471 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) [2021-11-23 02:00:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 432 transitions. [2021-11-23 02:00:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:00:10,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:10,993 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:00:11,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:11,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 02:00:11,209 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:00:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash 866655566, now seen corresponding path program 1 times [2021-11-23 02:00:11,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:00:11,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830070317] [2021-11-23 02:00:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:11,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:00:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:00:11,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:00:11,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830070317] [2021-11-23 02:00:11,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830070317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:00:11,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141715380] [2021-11-23 02:00:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:11,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:00:11,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:00:11,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:00:11,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:00:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:11,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:00:11,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:00:11,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:00:12,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141715380] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:00:12,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [793152323] [2021-11-23 02:00:12,077 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-23 02:00:12,077 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:00:12,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:00:12,078 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:00:12,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:00:35,071 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:00:35,429 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2021-11-23 02:00:37,446 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 02:00:37,497 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:00:37,812 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2021-11-23 02:01:10,719 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2021-11-23 02:01:10,766 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-23 02:01:10,825 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2021-11-23 02:01:11,518 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 440 for LOIs [2021-11-23 02:01:11,807 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2021-11-23 02:01:11,864 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:01:24,745 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:30,376 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:54,584 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 486 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:01,024 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 498 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:07,609 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 508 DAG size of output: 290 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:31,413 WARN L227 SmtUtils]: Spent 22.23s on a formula simplification. DAG size of input: 577 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:43,676 WARN L227 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 566 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:27,480 WARN L227 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 582 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:54,143 WARN L227 SmtUtils]: Spent 12.52s on a formula simplification. DAG size of input: 612 DAG size of output: 471 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:03,145 WARN L227 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 612 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:09,616 WARN L227 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 610 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:16,796 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 646 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:29,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [793152323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:04:29,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:04:29,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2021-11-23 02:04:29,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032747036] [2021-11-23 02:04:29,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:04:29,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 02:04:29,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:04:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 02:04:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3113, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 02:04:29,931 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) [2021-11-23 02:04:42,069 WARN L227 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 573 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:59,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:04:59,749 INFO L93 Difference]: Finished difference Result 444 states and 637 transitions. [2021-11-23 02:04:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-23 02:04:59,750 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 [2021-11-23 02:04:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:04:59,755 INFO L225 Difference]: With dead ends: 444 [2021-11-23 02:04:59,755 INFO L226 Difference]: Without dead ends: 365 [2021-11-23 02:04:59,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 206.9s TimeCoverageRelationStatistics Valid=201, Invalid=3221, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 02:04:59,759 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 182 mSDsluCounter, 5525 mSDsCounter, 0 mSdLazyCounter, 6676 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 5589 SdHoareTripleChecker+Invalid, 6696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:04:59,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 5589 Invalid, 6696 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20 Valid, 6676 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2021-11-23 02:04:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-23 02:04:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 306. [2021-11-23 02:04:59,903 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) [2021-11-23 02:04:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 439 transitions. [2021-11-23 02:04:59,906 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 439 transitions. Word has length 80 [2021-11-23 02:04:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:04:59,907 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 439 transitions. [2021-11-23 02:04:59,908 INFO L471 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) [2021-11-23 02:04:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 439 transitions. [2021-11-23 02:04:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:04:59,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:04:59,911 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:04:59,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:05:00,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:05:00,115 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:05:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:05:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1735431580, now seen corresponding path program 1 times [2021-11-23 02:05:00,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:05:00,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662837238] [2021-11-23 02:05:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:05:00,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:05:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:05:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:05:00,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:05:00,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662837238] [2021-11-23 02:05:00,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662837238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:05:00,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:05:00,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:05:00,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269593292] [2021-11-23 02:05:00,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:05:00,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:05:00,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:05:00,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:05:00,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:05:00,191 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) [2021-11-23 02:05:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:05:00,443 INFO L93 Difference]: Finished difference Result 726 states and 1084 transitions. [2021-11-23 02:05:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:05:00,444 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 [2021-11-23 02:05:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:05:00,454 INFO L225 Difference]: With dead ends: 726 [2021-11-23 02:05:00,454 INFO L226 Difference]: Without dead ends: 446 [2021-11-23 02:05:00,455 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:05:00,457 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 55 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 396 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 [2021-11-23 02:05:00,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 396 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:05:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-23 02:05:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 439. [2021-11-23 02:05:00,617 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) [2021-11-23 02:05:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 666 transitions. [2021-11-23 02:05:00,622 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 666 transitions. Word has length 80 [2021-11-23 02:05:00,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:05:00,622 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 666 transitions. [2021-11-23 02:05:00,623 INFO L471 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) [2021-11-23 02:05:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 666 transitions. [2021-11-23 02:05:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:05:00,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:05:00,626 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:05:00,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:05:00,627 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:05:00,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:05:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2109668581, now seen corresponding path program 1 times [2021-11-23 02:05:00,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:05:00,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628604623] [2021-11-23 02:05:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:05:00,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:05:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:05:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:05:00,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:05:00,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628604623] [2021-11-23 02:05:00,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628604623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:05:00,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112199373] [2021-11-23 02:05:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:05:00,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:05:00,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:05:00,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:05:00,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e4329-71a6-443b-8e83-25d987291ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:05:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:05:00,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:05:00,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:05:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:05:01,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:05:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:05:01,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112199373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:05:01,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311969322] [2021-11-23 02:05:01,296 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-23 02:05:01,296 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:05:01,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:05:01,298 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:05:01,298 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:05:33,746 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:05:34,063 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:05:34,387 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2021-11-23 02:05:36,247 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2021-11-23 02:05:36,295 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2021-11-23 02:05:56,626 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 437 for LOIs [2021-11-23 02:05:56,865 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 02:05:56,920 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 447 for LOIs [2021-11-23 02:05:57,545 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:06:09,954 WARN L227 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:15,844 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:41,022 WARN L227 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 486 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:47,364 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 498 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:05,336 WARN L227 SmtUtils]: Spent 10.04s on a formula simplification. DAG size of input: 583 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:21,621 WARN L227 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 568 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:53,994 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 569 DAG size of output: 393 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:00,434 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 585 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)