./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product22.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_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/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_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/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_7576a72e-9a58-4bff-8981-0f865cee807e/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 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:15:30,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:15:30,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:15:30,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:15:30,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:15:30,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:15:30,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:15:30,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:15:30,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:15:30,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:15:30,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:15:30,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:15:30,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:15:30,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:15:30,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:15:30,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:15:30,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:15:30,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:15:30,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:15:30,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:15:30,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:15:30,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:15:30,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:15:30,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:15:30,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:15:30,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:15:30,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:15:30,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:15:30,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:15:30,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:15:30,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:15:30,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:15:30,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:15:30,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:15:30,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:15:30,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:15:30,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:15:30,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:15:30,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:15:30,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:15:30,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:15:30,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:15:30,466 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:15:30,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:15:30,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:15:30,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:15:30,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:15:30,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:15:30,469 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:15:30,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:15:30,470 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:15:30,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:15:30,470 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:15:30,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:15:30,471 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:15:30,471 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:15:30,471 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:15:30,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:15:30,472 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:15:30,472 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:15:30,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:15:30,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:15:30,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:15:30,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:15:30,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:15:30,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:15:30,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:15:30,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:15:30,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:15:30,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:15:30,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:15:30,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:15:30,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:15:30,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:15:30,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:15:30,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:15:30,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:15:30,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:15:30,484 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:15:30,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:15:30,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:15:30,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:15:30,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:15:30,486 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_7576a72e-9a58-4bff-8981-0f865cee807e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 [2021-11-23 03:15:30,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:15:30,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:15:30,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:15:30,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:15:30,856 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:15:30,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2021-11-23 03:15:30,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/data/0392f6db0/e2035940410b41b9be5b49ac38c8d77c/FLAG289bc0d65 [2021-11-23 03:15:31,716 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:15:31,717 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2021-11-23 03:15:31,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/data/0392f6db0/e2035940410b41b9be5b49ac38c8d77c/FLAG289bc0d65 [2021-11-23 03:15:31,943 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/data/0392f6db0/e2035940410b41b9be5b49ac38c8d77c [2021-11-23 03:15:31,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:15:31,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:15:31,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:15:31,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:15:31,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:15:31,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:31" (1/1) ... [2021-11-23 03:15:31,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380b647e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:31, skipping insertion in model container [2021-11-23 03:15:31,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:31" (1/1) ... [2021-11-23 03:15:31,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:15:32,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:15:32,359 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_7576a72e-9a58-4bff-8981-0f865cee807e/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c[4724,4737] [2021-11-23 03:15:32,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:15:32,731 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:15:32,762 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_7576a72e-9a58-4bff-8981-0f865cee807e/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c[4724,4737] [2021-11-23 03:15:32,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:15:32,937 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:15:32,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32 WrapperNode [2021-11-23 03:15:32,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:15:32,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:15:32,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:15:32,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:15:32,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:32,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,104 INFO L137 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1008 [2021-11-23 03:15:33,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:15:33,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:15:33,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:15:33,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:15:33,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:15:33,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:15:33,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:15:33,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:15:33,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (1/1) ... [2021-11-23 03:15:33,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:15:33,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:15:33,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:15:33,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:15:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 03:15:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 03:15:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 03:15:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 03:15:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:15:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:15:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:15:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:15:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:15:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:15:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:15:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:15:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 03:15:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 03:15:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:15:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:15:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:15:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:15:33,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:15:33,287 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 03:15:33,287 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 03:15:33,287 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:15:33,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:15:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:15:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:15:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:15:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:15:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:15:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:15:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:15:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:15:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:15:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 03:15:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 03:15:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:15:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:15:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:15:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:15:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:15:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:15:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:15:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:15:33,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:15:33,562 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:15:33,564 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:15:34,614 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:15:35,212 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:15:35,213 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:15:35,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:15:35 BoogieIcfgContainer [2021-11-23 03:15:35,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:15:35,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:15:35,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:15:35,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:15:35,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:15:31" (1/3) ... [2021-11-23 03:15:35,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311f25fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:15:35, skipping insertion in model container [2021-11-23 03:15:35,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:32" (2/3) ... [2021-11-23 03:15:35,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311f25fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:15:35, skipping insertion in model container [2021-11-23 03:15:35,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:15:35" (3/3) ... [2021-11-23 03:15:35,229 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product22.cil.c [2021-11-23 03:15:35,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:15:35,236 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:15:35,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:15:35,325 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 03:15:35,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:15:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 03:15:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 03:15:35,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:35,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:15:35,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:15:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1548518189, now seen corresponding path program 1 times [2021-11-23 03:15:35,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:35,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718649453] [2021-11-23 03:15:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:35,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:15:35,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:35,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718649453] [2021-11-23 03:15:35,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718649453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:35,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:35,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:15:35,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965809413] [2021-11-23 03:15:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:35,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:15:35,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:15:35,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:15:35,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:15:35,887 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 03:15:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:36,134 INFO L93 Difference]: Finished difference Result 259 states and 346 transitions. [2021-11-23 03:15:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:15:36,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 72 [2021-11-23 03:15:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:36,155 INFO L225 Difference]: With dead ends: 259 [2021-11-23 03:15:36,156 INFO L226 Difference]: Without dead ends: 168 [2021-11-23 03:15:36,161 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 03:15:36,165 INFO L933 BasicCegarLoop]: 196 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, 196 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 03:15:36,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-23 03:15:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-23 03:15:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 03:15:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2021-11-23 03:15:36,243 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 72 [2021-11-23 03:15:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:36,249 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2021-11-23 03:15:36,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 03:15:36,252 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2021-11-23 03:15:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:15:36,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:36,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:15:36,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:15:36,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:15:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1352108211, now seen corresponding path program 1 times [2021-11-23 03:15:36,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:36,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336123815] [2021-11-23 03:15:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:36,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:15:36,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:36,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336123815] [2021-11-23 03:15:36,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336123815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:36,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:36,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:15:36,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68284617] [2021-11-23 03:15:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:36,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:15:36,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:15:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:15:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:36,492 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 03:15:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:36,634 INFO L93 Difference]: Finished difference Result 255 states and 334 transitions. [2021-11-23 03:15:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:15:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 73 [2021-11-23 03:15:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:36,640 INFO L225 Difference]: With dead ends: 255 [2021-11-23 03:15:36,641 INFO L226 Difference]: Without dead ends: 170 [2021-11-23 03:15:36,643 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 03:15:36,645 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 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 03:15:36,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-23 03:15:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-23 03:15:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.3) internal successors, (130), 103 states have internal predecessors, (130), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 03:15:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 229 transitions. [2021-11-23 03:15:36,698 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 229 transitions. Word has length 73 [2021-11-23 03:15:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:36,699 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 229 transitions. [2021-11-23 03:15:36,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 03:15:36,700 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 229 transitions. [2021-11-23 03:15:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 03:15:36,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:36,706 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] [2021-11-23 03:15:36,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:15:36,707 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:15:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash -191960255, now seen corresponding path program 1 times [2021-11-23 03:15:36,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:36,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083894553] [2021-11-23 03:15:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:36,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:15:36,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:36,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083894553] [2021-11-23 03:15:36,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083894553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:36,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:36,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:15:36,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133431770] [2021-11-23 03:15:36,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:36,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:15:36,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:15:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:15:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:36,905 INFO L87 Difference]: Start difference. First operand 170 states and 229 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 03:15:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:37,101 INFO L93 Difference]: Finished difference Result 370 states and 517 transitions. [2021-11-23 03:15:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:15:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 78 [2021-11-23 03:15:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:37,112 INFO L225 Difference]: With dead ends: 370 [2021-11-23 03:15:37,112 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 03:15:37,115 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 03:15:37,123 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 57 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:37,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 399 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 03:15:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2021-11-23 03:15:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 135 states have internal predecessors, (183), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-23 03:15:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 304 transitions. [2021-11-23 03:15:37,184 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 304 transitions. Word has length 78 [2021-11-23 03:15:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:37,186 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 304 transitions. [2021-11-23 03:15:37,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 03:15:37,187 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 304 transitions. [2021-11-23 03:15:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:15:37,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:37,200 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] [2021-11-23 03:15:37,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:15:37,201 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:15:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash -729237157, now seen corresponding path program 1 times [2021-11-23 03:15:37,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420510743] [2021-11-23 03:15:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:37,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:15:37,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:37,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420510743] [2021-11-23 03:15:37,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420510743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:15:37,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928343489] [2021-11-23 03:15:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:37,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:15:37,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:15:37,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:15:37,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:15:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:37,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:15:37,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:15:38,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:15:38,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928343489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:15:38,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682071228] [2021-11-23 03:15:38,238 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2021-11-23 03:15:38,238 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:15:38,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:15:38,249 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:15:38,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:16:11,927 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:16:12,244 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:16:12,552 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:16:29,705 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:16:54,915 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 498 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:13,746 WARN L227 SmtUtils]: Spent 12.59s on a formula simplification. DAG size of input: 593 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:28,044 WARN L227 SmtUtils]: Spent 12.74s on a formula simplification. DAG size of input: 595 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:35,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [682071228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:35,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:17:35,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 03:17:35,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183906044] [2021-11-23 03:17:35,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:35,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:17:35,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:17:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:17:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:17:35,840 INFO L87 Difference]: Start difference. First operand 213 states and 304 transitions. Second operand has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-23 03:17:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:57,487 INFO L93 Difference]: Finished difference Result 509 states and 776 transitions. [2021-11-23 03:17:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 03:17:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 79 [2021-11-23 03:17:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:57,492 INFO L225 Difference]: With dead ends: 509 [2021-11-23 03:17:57,492 INFO L226 Difference]: Without dead ends: 314 [2021-11-23 03:17:57,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 97.9s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:17:57,494 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 227 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:57,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 3020 Invalid, 1987 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 03:17:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-23 03:17:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 241. [2021-11-23 03:17:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 159 states have (on average 1.3962264150943395) internal successors, (222), 162 states have internal predecessors, (222), 61 states have call successors, (61), 20 states have call predecessors, (61), 20 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-23 03:17:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 343 transitions. [2021-11-23 03:17:57,584 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 343 transitions. Word has length 79 [2021-11-23 03:17:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:57,585 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 343 transitions. [2021-11-23 03:17:57,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-23 03:17:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 343 transitions. [2021-11-23 03:17:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:17:57,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:57,588 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 03:17:57,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:17:57,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:17:57,817 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:17:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:57,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1454913617, now seen corresponding path program 1 times [2021-11-23 03:17:57,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:17:57,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326318637] [2021-11-23 03:17:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:57,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:17:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:17:57,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:17:57,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326318637] [2021-11-23 03:17:57,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326318637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:17:57,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73201077] [2021-11-23 03:17:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:57,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:17:57,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:17:57,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:17:57,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:17:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:58,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:17:58,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:17:58,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:17:58,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73201077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:17:58,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362748527] [2021-11-23 03:17:58,655 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-23 03:17:58,656 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:17:58,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:17:58,657 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:17:58,657 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:18:36,136 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:18:36,416 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 03:18:36,686 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 250 for LOIs [2021-11-23 03:18:38,428 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2021-11-23 03:18:45,042 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 449 for LOIs [2021-11-23 03:18:45,517 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2021-11-23 03:18:45,558 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2021-11-23 03:18:47,083 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:19:26,829 WARN L227 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 498 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:50,579 WARN L227 SmtUtils]: Spent 16.57s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:08,814 WARN L227 SmtUtils]: Spent 16.50s on a formula simplification. DAG size of input: 589 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:38,609 WARN L227 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 472 DAG size of output: 261 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:08,746 WARN L227 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 449 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:23,635 WARN L227 SmtUtils]: Spent 12.55s on a formula simplification. DAG size of input: 468 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:30,857 WARN L227 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 476 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:36,847 WARN L227 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 546 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:52,953 WARN L227 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 556 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:00,374 WARN L227 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 595 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:10,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1362748527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:10,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:22:10,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2021-11-23 03:22:10,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30796534] [2021-11-23 03:22:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:10,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-23 03:22:10,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-23 03:22:10,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2613, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 03:22:10,334 INFO L87 Difference]: Start difference. First operand 241 states and 343 transitions. Second operand has 48 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 31 states have internal predecessors, (44), 15 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2021-11-23 03:22:18,628 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 333 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:24,871 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 335 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:31,733 WARN L227 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 333 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:39,380 WARN L227 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 345 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:23:11,047 WARN L227 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 342 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:23:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:39,020 INFO L93 Difference]: Finished difference Result 593 states and 893 transitions. [2021-11-23 03:23:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-23 03:23:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 31 states have internal predecessors, (44), 15 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 85 [2021-11-23 03:23:39,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:39,028 INFO L225 Difference]: With dead ends: 593 [2021-11-23 03:23:39,029 INFO L226 Difference]: Without dead ends: 398 [2021-11-23 03:23:39,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 203 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 274.2s TimeCoverageRelationStatistics Valid=284, Invalid=4828, Unknown=0, NotChecked=0, Total=5112 [2021-11-23 03:23:39,034 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 302 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 5178 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 4761 SdHoareTripleChecker+Invalid, 5240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 5178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:39,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 4761 Invalid, 5240 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [62 Valid, 5178 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2021-11-23 03:23:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-23 03:23:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 314. [2021-11-23 03:23:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 218 states have (on average 1.4174311926605505) internal successors, (309), 223 states have internal predecessors, (309), 70 states have call successors, (70), 26 states have call predecessors, (70), 25 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-23 03:23:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 448 transitions. [2021-11-23 03:23:39,175 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 448 transitions. Word has length 85 [2021-11-23 03:23:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:39,176 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 448 transitions. [2021-11-23 03:23:39,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 31 states have internal predecessors, (44), 15 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2021-11-23 03:23:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 448 transitions. [2021-11-23 03:23:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 03:23:39,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:39,179 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] [2021-11-23 03:23:39,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:39,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:23:39,385 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:23:39,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash 802349818, now seen corresponding path program 1 times [2021-11-23 03:23:39,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:23:39,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154468534] [2021-11-23 03:23:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:39,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:23:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:23:39,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:23:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154468534] [2021-11-23 03:23:39,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154468534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:23:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109258450] [2021-11-23 03:23:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:39,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:23:39,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:23:39,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:23:39,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7576a72e-9a58-4bff-8981-0f865cee807e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:23:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:39,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:23:39,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:23:40,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:23:40,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109258450] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:23:40,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853972297] [2021-11-23 03:23:40,305 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2021-11-23 03:23:40,305 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:23:40,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:23:40,307 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:23:40,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:24:43,107 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:24:43,409 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2021-11-23 03:24:43,717 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2021-11-23 03:24:44,026 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 226 for LOIs [2021-11-23 03:24:45,590 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2021-11-23 03:24:45,660 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:24:45,914 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 226 for LOIs [2021-11-23 03:24:59,239 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 393 for LOIs [2021-11-23 03:24:59,641 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2021-11-23 03:24:59,677 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 217 for LOIs [2021-11-23 03:24:59,788 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:25:40,903 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 498 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:01,963 WARN L227 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 528 DAG size of output: 314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:08,975 WARN L227 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 521 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:26,645 WARN L227 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 523 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:44,335 WARN L227 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 526 DAG size of output: 302 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:07,850 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 393 DAG size of output: 227 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)