./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product30.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_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/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_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/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_8dbbab8d-097f-4bdf-b756-f7517dc88903/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 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:02:34,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:02:34,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:02:34,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:02:34,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:02:34,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:02:34,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:02:34,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:02:34,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:02:34,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:02:34,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:02:34,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:02:34,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:02:34,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:02:34,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:02:34,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:02:34,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:02:34,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:02:34,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:02:34,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:02:34,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:02:34,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:02:34,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:02:34,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:02:34,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:02:34,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:02:34,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:02:34,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:02:34,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:02:34,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:02:34,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:02:34,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:02:34,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:02:34,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:02:34,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:02:34,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:02:34,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:02:34,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:02:34,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:02:34,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:02:34,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:02:34,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:02:34,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:02:34,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:02:34,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:02:34,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:02:34,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:02:34,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:02:34,453 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:02:34,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:02:34,453 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:02:34,454 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:02:34,454 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:02:34,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:02:34,455 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:02:34,455 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:02:34,455 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:02:34,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:02:34,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:02:34,456 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:02:34,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:02:34,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:02:34,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:02:34,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:02:34,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:02:34,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:02:34,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:02:34,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:02:34,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:02:34,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:02:34,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:02:34,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:02:34,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:02:34,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:02:34,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:02:34,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:02:34,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:02:34,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:02:34,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:02:34,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:02:34,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:02:34,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:02:34,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:02:34,464 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_8dbbab8d-097f-4bdf-b756-f7517dc88903/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 [2021-11-23 03:02:34,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:02:34,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:02:34,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:02:34,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:02:34,814 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:02:34,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2021-11-23 03:02:34,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/data/2c3929646/a5f3e1f7ca4647dc8a8fb6f3128c97bd/FLAGaaa272aab [2021-11-23 03:02:35,584 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:02:35,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2021-11-23 03:02:35,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/data/2c3929646/a5f3e1f7ca4647dc8a8fb6f3128c97bd/FLAGaaa272aab [2021-11-23 03:02:35,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/data/2c3929646/a5f3e1f7ca4647dc8a8fb6f3128c97bd [2021-11-23 03:02:35,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:02:35,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:02:35,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:02:35,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:02:35,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:02:35,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:35" (1/1) ... [2021-11-23 03:02:35,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cd322b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:35, skipping insertion in model container [2021-11-23 03:02:35,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:35" (1/1) ... [2021-11-23 03:02:35,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:02:35,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:02:36,505 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_8dbbab8d-097f-4bdf-b756-f7517dc88903/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c[47628,47641] [2021-11-23 03:02:36,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:02:36,605 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:02:36,681 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_8dbbab8d-097f-4bdf-b756-f7517dc88903/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c[47628,47641] [2021-11-23 03:02:36,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:02:36,742 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:02:36,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36 WrapperNode [2021-11-23 03:02:36,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:02:36,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:02:36,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:02:36,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:02:36,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,834 INFO L137 Inliner]: procedures = 131, calls = 219, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 916 [2021-11-23 03:02:36,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:02:36,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:02:36,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:02:36,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:02:36,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:02:36,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:02:36,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:02:36,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:02:36,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (1/1) ... [2021-11-23 03:02:36,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:02:36,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:02:36,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:02:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:02:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 03:02:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 03:02:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 03:02:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 03:02:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 03:02:36,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 03:02:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:02:36,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:02:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:02:36,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:02:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:02:36,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:02:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:02:36,998 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:02:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 03:02:36,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 03:02:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:02:36,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:02:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:02:36,999 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:02:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:02:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:02:37,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:02:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:02:37,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:02:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:02:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:02:37,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:02:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 03:02:37,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 03:02:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:02:37,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:02:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:02:37,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:02:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:02:37,002 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:02:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-11-23 03:02:37,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-11-23 03:02:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 03:02:37,003 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 03:02:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:02:37,003 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:02:37,004 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 03:02:37,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 03:02:37,004 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:02:37,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:02:37,004 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:02:37,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:02:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:02:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:02:37,005 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:02:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:02:37,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:02:37,222 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:02:37,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:02:38,053 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:02:38,437 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:02:38,437 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:02:38,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:38 BoogieIcfgContainer [2021-11-23 03:02:38,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:02:38,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:02:38,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:02:38,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:02:38,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:02:35" (1/3) ... [2021-11-23 03:02:38,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb1559f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:38, skipping insertion in model container [2021-11-23 03:02:38,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:36" (2/3) ... [2021-11-23 03:02:38,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb1559f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:38, skipping insertion in model container [2021-11-23 03:02:38,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:38" (3/3) ... [2021-11-23 03:02:38,454 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.c [2021-11-23 03:02:38,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:02:38,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:02:38,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:02:38,535 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 03:02:38,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:02:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 117 states have internal predecessors, (150), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-23 03:02:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 03:02:38,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:38,585 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:38,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1897085193, now seen corresponding path program 1 times [2021-11-23 03:02:38,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:38,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668953660] [2021-11-23 03:02:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:38,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:02:38,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668953660] [2021-11-23 03:02:38,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668953660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:38,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:38,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:02:38,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704269540] [2021-11-23 03:02:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:39,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:02:39,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:02:39,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:02:39,046 INFO L87 Difference]: Start difference. First operand has 193 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 117 states have internal predecessors, (150), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:02:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:39,201 INFO L93 Difference]: Finished difference Result 303 states and 394 transitions. [2021-11-23 03:02:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:02:39,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 92 [2021-11-23 03:02:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:39,216 INFO L225 Difference]: With dead ends: 303 [2021-11-23 03:02:39,217 INFO L226 Difference]: Without dead ends: 190 [2021-11-23 03:02:39,221 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 03:02:39,225 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:39,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:02:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-23 03:02:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-23 03:02:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 114 states have internal predecessors, (144), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-23 03:02:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 251 transitions. [2021-11-23 03:02:39,294 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 251 transitions. Word has length 92 [2021-11-23 03:02:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:39,296 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 251 transitions. [2021-11-23 03:02:39,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:02:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 251 transitions. [2021-11-23 03:02:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:02:39,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:39,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:39,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:02:39,314 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:39,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1185755477, now seen corresponding path program 1 times [2021-11-23 03:02:39,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:39,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49805254] [2021-11-23 03:02:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:39,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:02:39,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:39,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49805254] [2021-11-23 03:02:39,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49805254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:39,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:39,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:02:39,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503601136] [2021-11-23 03:02:39,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:39,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:02:39,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:02:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:02:39,530 INFO L87 Difference]: Start difference. First operand 190 states and 251 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:02:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:39,700 INFO L93 Difference]: Finished difference Result 299 states and 382 transitions. [2021-11-23 03:02:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:02:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 93 [2021-11-23 03:02:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:39,705 INFO L225 Difference]: With dead ends: 299 [2021-11-23 03:02:39,705 INFO L226 Difference]: Without dead ends: 192 [2021-11-23 03:02:39,707 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 03:02:39,709 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:39,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:02:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-23 03:02:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-11-23 03:02:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 116 states have internal predecessors, (146), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-23 03:02:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 253 transitions. [2021-11-23 03:02:39,736 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 253 transitions. Word has length 93 [2021-11-23 03:02:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:39,737 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 253 transitions. [2021-11-23 03:02:39,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:02:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 253 transitions. [2021-11-23 03:02:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 03:02:39,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:39,744 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:39,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:02:39,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash -452752946, now seen corresponding path program 1 times [2021-11-23 03:02:39,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:39,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486118357] [2021-11-23 03:02:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:39,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:39,946 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 03:02:39,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:39,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486118357] [2021-11-23 03:02:39,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486118357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:39,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:39,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:02:39,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563166504] [2021-11-23 03:02:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:39,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:02:39,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:02:39,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:02:39,957 INFO L87 Difference]: Start difference. First operand 192 states and 253 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:02:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:40,109 INFO L93 Difference]: Finished difference Result 414 states and 565 transitions. [2021-11-23 03:02:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:02:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 98 [2021-11-23 03:02:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:40,119 INFO L225 Difference]: With dead ends: 414 [2021-11-23 03:02:40,120 INFO L226 Difference]: Without dead ends: 240 [2021-11-23 03:02:40,126 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 03:02:40,133 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 57 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:40,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 446 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:02:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-23 03:02:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2021-11-23 03:02:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 148 states have internal predecessors, (199), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 03:02:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 328 transitions. [2021-11-23 03:02:40,187 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 328 transitions. Word has length 98 [2021-11-23 03:02:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:40,187 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 328 transitions. [2021-11-23 03:02:40,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:02:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 328 transitions. [2021-11-23 03:02:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 03:02:40,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:40,206 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:40,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:02:40,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2019043731, now seen corresponding path program 1 times [2021-11-23 03:02:40,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:40,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644596958] [2021-11-23 03:02:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:40,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:40,406 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 03:02:40,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:40,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644596958] [2021-11-23 03:02:40,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644596958] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:02:40,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535661935] [2021-11-23 03:02:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:40,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:02:40,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:02:40,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:02:40,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:02:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:02:40,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:02:41,050 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 03:02:41,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:02:41,262 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 03:02:41,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535661935] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:02:41,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571183768] [2021-11-23 03:02:41,285 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2021-11-23 03:02:41,285 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:02:41,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:02:41,296 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:02:41,297 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:03:21,520 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:03:21,876 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2021-11-23 03:03:24,217 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 03:03:24,282 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:03:24,602 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2021-11-23 03:03:49,962 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2021-11-23 03:03:50,580 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2021-11-23 03:03:50,627 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2021-11-23 03:03:51,161 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2021-11-23 03:03:51,235 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 03:03:51,288 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2021-11-23 03:03:52,887 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2021-11-23 03:03:52,947 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:04:18,126 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 464 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:04:23,542 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 476 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:04:47,556 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 562 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:04:55,106 WARN L227 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 558 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:02,249 WARN L227 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 564 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:14,004 WARN L227 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 473 DAG size of output: 279 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:39,651 WARN L227 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 452 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:47,938 WARN L227 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 478 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:06:26,567 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 586 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:06:33,506 WARN L227 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 590 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:07:14,836 WARN L227 SmtUtils]: Spent 16.97s on a formula simplification. DAG size of input: 645 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:07:26,392 WARN L227 SmtUtils]: Spent 10.23s on a formula simplification. DAG size of input: 642 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:07:35,414 WARN L227 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 636 DAG size of output: 445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:07:51,807 WARN L227 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 690 DAG size of output: 508 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:08:01,619 WARN L227 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 686 DAG size of output: 509 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:08:01,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [571183768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:01,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:08:01,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [4, 4, 4] total 72 [2021-11-23 03:08:01,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563061302] [2021-11-23 03:08:01,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:01,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-23 03:08:01,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:01,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-23 03:08:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4872, Unknown=0, NotChecked=0, Total=5112 [2021-11-23 03:08:01,628 INFO L87 Difference]: Start difference. First operand 235 states and 328 transitions. Second operand has 67 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 41 states have internal predecessors, (50), 20 states have call successors, (21), 13 states have call predecessors, (21), 11 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2021-11-23 03:09:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:09:25,073 INFO L93 Difference]: Finished difference Result 737 states and 1116 transitions. [2021-11-23 03:09:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-23 03:09:25,078 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 41 states have internal predecessors, (50), 20 states have call successors, (21), 13 states have call predecessors, (21), 11 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 99 [2021-11-23 03:09:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:09:25,085 INFO L225 Difference]: With dead ends: 737 [2021-11-23 03:09:25,085 INFO L226 Difference]: Without dead ends: 520 [2021-11-23 03:09:25,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 296.6s TimeCoverageRelationStatistics Valid=345, Invalid=6965, Unknown=0, NotChecked=0, Total=7310 [2021-11-23 03:09:25,092 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 443 mSDsluCounter, 8368 mSDsCounter, 0 mSdLazyCounter, 11251 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 8507 SdHoareTripleChecker+Invalid, 11323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 11251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:09:25,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 8507 Invalid, 11323 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [72 Valid, 11251 Invalid, 0 Unknown, 0 Unchecked, 34.8s Time] [2021-11-23 03:09:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-23 03:09:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 382. [2021-11-23 03:09:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 259 states have (on average 1.4131274131274132) internal successors, (366), 263 states have internal predecessors, (366), 88 states have call successors, (88), 35 states have call predecessors, (88), 34 states have return successors, (88), 85 states have call predecessors, (88), 87 states have call successors, (88) [2021-11-23 03:09:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 542 transitions. [2021-11-23 03:09:25,280 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 542 transitions. Word has length 99 [2021-11-23 03:09:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:09:25,281 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 542 transitions. [2021-11-23 03:09:25,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 41 states have internal predecessors, (50), 20 states have call successors, (21), 13 states have call predecessors, (21), 11 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2021-11-23 03:09:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 542 transitions. [2021-11-23 03:09:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 03:09:25,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:09:25,286 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:09:25,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:09:25,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:09:25,493 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:09:25,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:09:25,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1041057883, now seen corresponding path program 1 times [2021-11-23 03:09:25,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:09:25,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419421067] [2021-11-23 03:09:25,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:09:25,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:09:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:09:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:09:25,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:09:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419421067] [2021-11-23 03:09:25,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419421067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:09:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376786320] [2021-11-23 03:09:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:09:25,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:09:25,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:09:25,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:09:25,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbbab8d-097f-4bdf-b756-f7517dc88903/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:09:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:09:25,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:09:26,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:09:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:09:26,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:09:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:09:26,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376786320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:09:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [246424118] [2021-11-23 03:09:26,455 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2021-11-23 03:09:26,455 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:09:26,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:09:26,456 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:09:26,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:09:54,096 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:09:54,344 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2021-11-23 03:09:56,035 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 03:09:56,077 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:09:56,326 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2021-11-23 03:10:30,876 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 429 for LOIs [2021-11-23 03:10:32,581 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2021-11-23 03:10:33,088 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2021-11-23 03:10:33,164 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 03:10:33,210 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2021-11-23 03:10:34,743 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2021-11-23 03:10:34,790 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2021-11-23 03:10:34,837 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:11:25,392 WARN L227 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 562 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:32,228 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 558 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:39,200 WARN L227 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 564 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:49,937 WARN L227 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 473 DAG size of output: 279 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:12,331 WARN L227 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 452 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:20,629 WARN L227 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 478 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:53,380 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 586 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:00,213 WARN L227 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 590 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:15,120 WARN L227 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 615 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:22,586 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 615 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:31,722 WARN L227 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 629 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:51,459 WARN L227 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 638 DAG size of output: 480 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:14:01,297 WARN L227 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 638 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:14:09,309 WARN L227 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 632 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)