./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW --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 bcfdffd5743ab46e6f5628bffe82029f1c91fa1aa61e5033c157235a6e9c82be --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:49:50,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:49:50,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:49:50,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:49:50,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:49:50,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:49:50,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:49:50,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:49:50,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:49:50,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:49:50,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:49:50,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:49:50,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:49:50,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:49:50,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:49:50,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:49:50,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:49:50,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:49:50,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:49:50,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:49:50,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:49:50,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:49:50,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:49:50,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:49:50,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:49:50,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:49:50,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:49:50,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:49:50,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:49:50,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:49:50,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:49:50,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:49:50,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:49:50,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:49:50,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:49:50,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:49:50,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:49:50,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:49:50,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:49:50,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:49:50,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:49:50,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:49:50,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:49:50,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:49:50,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:49:50,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:49:50,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:49:50,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:49:50,452 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:49:50,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:49:50,452 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:49:50,452 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:49:50,453 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:49:50,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:49:50,454 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:49:50,454 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:49:50,454 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:49:50,455 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:49:50,455 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:49:50,455 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:49:50,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:49:50,456 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:49:50,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:49:50,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:49:50,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:49:50,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:49:50,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:49:50,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:49:50,458 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:49:50,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:49:50,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:49:50,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:49:50,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:49:50,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:49:50,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:49:50,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:49:50,460 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:49:50,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:49:50,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:49:50,461 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:49:50,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:49:50,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:49:50,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:49:50,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfdffd5743ab46e6f5628bffe82029f1c91fa1aa61e5033c157235a6e9c82be [2022-11-23 13:49:50,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:49:50,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:49:50,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:49:50,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:49:50,797 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:49:50,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec6_product14.cil.c [2022-11-23 13:49:53,828 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:49:54,177 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:49:54,178 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c [2022-11-23 13:49:54,212 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/data/0e6399b36/96c4ee42e7174ecb9d5f5ed51f68f3a6/FLAGac9bea9a6 [2022-11-23 13:49:54,257 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/data/0e6399b36/96c4ee42e7174ecb9d5f5ed51f68f3a6 [2022-11-23 13:49:54,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:49:54,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:49:54,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:49:54,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:49:54,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:49:54,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:54" (1/1) ... [2022-11-23 13:49:54,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61922266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:54, skipping insertion in model container [2022-11-23 13:49:54,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:54" (1/1) ... [2022-11-23 13:49:54,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:49:54,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:49:54,771 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c[43937,43950] [2022-11-23 13:49:54,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:49:54,881 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:49:54,957 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c[43937,43950] [2022-11-23 13:49:55,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:49:55,034 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:49:55,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55 WrapperNode [2022-11-23 13:49:55,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:49:55,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:49:55,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:49:55,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:49:55,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,117 INFO L138 Inliner]: procedures = 126, calls = 212, calls flagged for inlining = 49, calls inlined = 41, statements flattened = 878 [2022-11-23 13:49:55,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:49:55,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:49:55,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:49:55,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:49:55,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:49:55,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:49:55,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:49:55,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:49:55,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (1/1) ... [2022-11-23 13:49:55,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:49:55,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:55,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:49:55,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:49:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 13:49:55,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 13:49:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 13:49:55,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 13:49:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 13:49:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 13:49:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 13:49:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 13:49:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 13:49:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 13:49:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 13:49:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 13:49:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 13:49:55,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 13:49:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 13:49:55,305 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 13:49:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 13:49:55,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 13:49:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 13:49:55,306 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 13:49:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 13:49:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 13:49:55,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 13:49:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:49:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 13:49:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 13:49:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 13:49:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 13:49:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 13:49:55,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 13:49:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 13:49:55,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 13:49:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 13:49:55,311 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 13:49:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-23 13:49:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-23 13:49:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 13:49:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 13:49:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 13:49:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 13:49:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 13:49:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 13:49:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 13:49:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 13:49:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:49:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 13:49:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 13:49:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 13:49:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 13:49:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:49:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:49:55,570 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:49:55,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:49:56,543 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:49:57,156 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:49:57,156 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:49:57,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:57 BoogieIcfgContainer [2022-11-23 13:49:57,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:49:57,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:49:57,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:49:57,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:49:57,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:49:54" (1/3) ... [2022-11-23 13:49:57,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9deef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:57, skipping insertion in model container [2022-11-23 13:49:57,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:55" (2/3) ... [2022-11-23 13:49:57,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9deef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:57, skipping insertion in model container [2022-11-23 13:49:57,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:57" (3/3) ... [2022-11-23 13:49:57,172 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product14.cil.c [2022-11-23 13:49:57,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:49:57,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:49:57,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:49:57,257 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b2ca30a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:49:57,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:49:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 109 states have internal predecessors, (138), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-23 13:49:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 13:49:57,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:57,295 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:57,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1647363356, now seen corresponding path program 1 times [2022-11-23 13:49:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:57,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942766299] [2022-11-23 13:49:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:57,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:57,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942766299] [2022-11-23 13:49:57,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942766299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:57,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:57,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:49:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059238127] [2022-11-23 13:49:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:57,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:49:57,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:49:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:49:57,855 INFO L87 Difference]: Start difference. First operand has 185 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 109 states have internal predecessors, (138), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:58,059 INFO L93 Difference]: Finished difference Result 278 states and 371 transitions. [2022-11-23 13:49:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:49:58,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 79 [2022-11-23 13:49:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:58,073 INFO L225 Difference]: With dead ends: 278 [2022-11-23 13:49:58,073 INFO L226 Difference]: Without dead ends: 182 [2022-11-23 13:49:58,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:49:58,081 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:58,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-23 13:49:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-23 13:49:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 106 states have internal predecessors, (132), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-23 13:49:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 243 transitions. [2022-11-23 13:49:58,137 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 243 transitions. Word has length 79 [2022-11-23 13:49:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:58,139 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 243 transitions. [2022-11-23 13:49:58,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 243 transitions. [2022-11-23 13:49:58,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 13:49:58,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:58,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:58,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:49:58,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:58,145 INFO L85 PathProgramCache]: Analyzing trace with hash -87781500, now seen corresponding path program 1 times [2022-11-23 13:49:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:58,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742438032] [2022-11-23 13:49:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:58,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:58,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:58,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742438032] [2022-11-23 13:49:58,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742438032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:58,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:58,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:58,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448620148] [2022-11-23 13:49:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:58,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:58,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:58,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:58,445 INFO L87 Difference]: Start difference. First operand 182 states and 243 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:58,624 INFO L93 Difference]: Finished difference Result 274 states and 356 transitions. [2022-11-23 13:49:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:58,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2022-11-23 13:49:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:58,627 INFO L225 Difference]: With dead ends: 274 [2022-11-23 13:49:58,627 INFO L226 Difference]: Without dead ends: 184 [2022-11-23 13:49:58,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:58,629 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:58,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-23 13:49:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-23 13:49:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 108 states have internal predecessors, (134), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-23 13:49:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 245 transitions. [2022-11-23 13:49:58,667 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 245 transitions. Word has length 80 [2022-11-23 13:49:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:58,668 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 245 transitions. [2022-11-23 13:49:58,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 245 transitions. [2022-11-23 13:49:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 13:49:58,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:58,675 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:49:58,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash -358896681, now seen corresponding path program 1 times [2022-11-23 13:49:58,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:58,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354927770] [2022-11-23 13:49:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:58,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:58,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:58,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354927770] [2022-11-23 13:49:58,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354927770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:58,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:58,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511399644] [2022-11-23 13:49:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:58,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:58,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:58,837 INFO L87 Difference]: Start difference. First operand 184 states and 245 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:58,954 INFO L93 Difference]: Finished difference Result 403 states and 557 transitions. [2022-11-23 13:49:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:58,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-23 13:49:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:58,957 INFO L225 Difference]: With dead ends: 403 [2022-11-23 13:49:58,958 INFO L226 Difference]: Without dead ends: 237 [2022-11-23 13:49:58,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:58,961 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 59 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:58,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 439 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-23 13:49:58,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2022-11-23 13:49:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 138 states have (on average 1.3695652173913044) internal successors, (189), 142 states have internal predecessors, (189), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-23 13:49:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 328 transitions. [2022-11-23 13:49:58,986 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 328 transitions. Word has length 85 [2022-11-23 13:49:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:58,987 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 328 transitions. [2022-11-23 13:49:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:49:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 328 transitions. [2022-11-23 13:49:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 13:49:58,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:58,990 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:49:58,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash 541625859, now seen corresponding path program 1 times [2022-11-23 13:49:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:58,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290266276] [2022-11-23 13:49:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:59,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:59,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290266276] [2022-11-23 13:49:59,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290266276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:49:59,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806845087] [2022-11-23 13:49:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:59,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:59,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:59,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:49:59,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:49:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:59,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:49:59,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:49:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:59,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:49:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:59,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806845087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:49:59,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778738789] [2022-11-23 13:49:59,687 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-23 13:49:59,688 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:49:59,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:49:59,705 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:49:59,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:50:27,775 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 13:50:28,078 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-11-23 13:50:29,956 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-23 13:50:30,023 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 13:50:30,365 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-23 13:50:31,153 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 253 for LOIs [2022-11-23 13:50:40,877 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 238 for LOIs [2022-11-23 13:50:40,916 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 481 for LOIs [2022-11-23 13:50:45,736 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 242 for LOIs [2022-11-23 13:50:45,781 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 230 for LOIs [2022-11-23 13:50:45,818 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:51:19,364 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:51:27,278 WARN L233 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:51:58,301 WARN L233 SmtUtils]: Spent 20.22s on a formula simplification. DAG size of input: 581 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:52:09,407 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 583 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:52:30,157 WARN L233 SmtUtils]: Spent 13.37s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:52:37,476 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 498 DAG size of output: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:22,766 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 555 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:36,112 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 564 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:38,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [778738789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:38,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:53:38,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-23 13:53:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069998051] [2022-11-23 13:53:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:38,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-23 13:53:38,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-23 13:53:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3042, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 13:53:38,387 INFO L87 Difference]: Start difference. First operand 232 states and 328 transitions. Second operand has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-23 13:53:52,728 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 577 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:04,126 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 584 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:39,327 INFO L93 Difference]: Finished difference Result 596 states and 895 transitions. [2022-11-23 13:54:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-23 13:54:39,328 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 86 [2022-11-23 13:54:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:39,331 INFO L225 Difference]: With dead ends: 596 [2022-11-23 13:54:39,332 INFO L226 Difference]: Without dead ends: 382 [2022-11-23 13:54:39,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 204.4s TimeCoverageRelationStatistics Valid=193, Invalid=3839, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 13:54:39,335 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 195 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 7348 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 7372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 7348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 5984 Invalid, 7372 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [24 Valid, 7348 Invalid, 0 Unknown, 0 Unchecked, 28.3s Time] [2022-11-23 13:54:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-23 13:54:39,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 329. [2022-11-23 13:54:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 214 states have (on average 1.411214953271028) internal successors, (302), 219 states have internal predecessors, (302), 84 states have call successors, (84), 32 states have call predecessors, (84), 30 states have return successors, (84), 79 states have call predecessors, (84), 83 states have call successors, (84) [2022-11-23 13:54:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 470 transitions. [2022-11-23 13:54:39,553 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 470 transitions. Word has length 86 [2022-11-23 13:54:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:39,553 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 470 transitions. [2022-11-23 13:54:39,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-23 13:54:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 470 transitions. [2022-11-23 13:54:39,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 13:54:39,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:39,557 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:39,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:54:39,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:54:39,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:39,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:39,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2100549005, now seen corresponding path program 1 times [2022-11-23 13:54:39,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:39,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184801629] [2022-11-23 13:54:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:39,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 13:54:39,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:39,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184801629] [2022-11-23 13:54:39,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184801629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:39,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:39,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:54:39,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259323779] [2022-11-23 13:54:39,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:39,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:54:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:39,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:54:39,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:54:39,869 INFO L87 Difference]: Start difference. First operand 329 states and 470 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 13:54:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:40,205 INFO L93 Difference]: Finished difference Result 782 states and 1162 transitions. [2022-11-23 13:54:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:54:40,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 91 [2022-11-23 13:54:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:40,209 INFO L225 Difference]: With dead ends: 782 [2022-11-23 13:54:40,210 INFO L226 Difference]: Without dead ends: 479 [2022-11-23 13:54:40,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:54:40,212 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 57 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:40,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 452 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:54:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-23 13:54:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 472. [2022-11-23 13:54:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 326 states have (on average 1.48159509202454) internal successors, (483), 331 states have internal predecessors, (483), 115 states have call successors, (115), 32 states have call predecessors, (115), 30 states have return successors, (115), 110 states have call predecessors, (115), 114 states have call successors, (115) [2022-11-23 13:54:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 713 transitions. [2022-11-23 13:54:40,420 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 713 transitions. Word has length 91 [2022-11-23 13:54:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:40,420 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 713 transitions. [2022-11-23 13:54:40,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 13:54:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 713 transitions. [2022-11-23 13:54:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 13:54:40,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:40,424 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:54:40,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213214, now seen corresponding path program 1 times [2022-11-23 13:54:40,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:40,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013032310] [2022-11-23 13:54:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 13:54:40,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:40,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013032310] [2022-11-23 13:54:40,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013032310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:54:40,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802229634] [2022-11-23 13:54:40,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:40,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:54:40,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:54:40,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:54:40,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:54:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:40,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:54:40,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:54:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 13:54:40,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:54:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 13:54:41,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802229634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:54:41,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212167189] [2022-11-23 13:54:41,031 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-23 13:54:41,031 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:54:41,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:54:41,032 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:54:41,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:55:16,604 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 13:55:16,898 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 251 for LOIs [2022-11-23 13:55:18,392 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 13:55:18,442 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 13:55:18,735 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 251 for LOIs [2022-11-23 13:55:19,390 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 252 for LOIs [2022-11-23 13:55:26,335 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 447 for LOIs [2022-11-23 13:55:27,288 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-23 13:55:29,097 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 241 for LOIs [2022-11-23 13:55:29,139 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 227 for LOIs [2022-11-23 13:55:29,179 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:56:04,666 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:12,484 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:43,405 WARN L233 SmtUtils]: Spent 20.24s on a formula simplification. DAG size of input: 587 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:54,456 WARN L233 SmtUtils]: Spent 10.70s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:12,976 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 475 DAG size of output: 260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:48,594 WARN L233 SmtUtils]: Spent 11.92s on a formula simplification. DAG size of input: 447 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:01,324 WARN L233 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 466 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:24,723 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 554 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:37,952 WARN L233 SmtUtils]: Spent 10.41s on a formula simplification. DAG size of input: 565 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:42,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [212167189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:58:42,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:58:42,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-11-23 13:58:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979489644] [2022-11-23 13:58:42,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:58:42,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-23 13:58:42,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:58:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-23 13:58:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3488, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 13:58:42,003 INFO L87 Difference]: Start difference. First operand 472 states and 713 transitions. Second operand has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-23 13:59:03,668 WARN L233 SmtUtils]: Spent 18.35s on a formula simplification. DAG size of input: 566 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:35,693 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 584 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:47,145 WARN L233 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 591 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:27,441 INFO L93 Difference]: Finished difference Result 950 states and 1464 transitions. [2022-11-23 14:00:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-23 14:00:27,442 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 92 [2022-11-23 14:00:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:27,446 INFO L225 Difference]: With dead ends: 950 [2022-11-23 14:00:27,447 INFO L226 Difference]: Without dead ends: 636 [2022-11-23 14:00:27,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 261.6s TimeCoverageRelationStatistics Valid=279, Invalid=5421, Unknown=0, NotChecked=0, Total=5700 [2022-11-23 14:00:27,450 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 299 mSDsluCounter, 6265 mSDsCounter, 0 mSdLazyCounter, 8582 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 8622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 8582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:27,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 6527 Invalid, 8622 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [40 Valid, 8582 Invalid, 0 Unknown, 0 Unchecked, 35.7s Time] [2022-11-23 14:00:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-23 14:00:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 504. [2022-11-23 14:00:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 354 states have (on average 1.4830508474576272) internal successors, (525), 361 states have internal predecessors, (525), 118 states have call successors, (118), 33 states have call predecessors, (118), 31 states have return successors, (118), 111 states have call predecessors, (118), 117 states have call successors, (118) [2022-11-23 14:00:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 761 transitions. [2022-11-23 14:00:27,710 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 761 transitions. Word has length 92 [2022-11-23 14:00:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 761 transitions. [2022-11-23 14:00:27,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-23 14:00:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 761 transitions. [2022-11-23 14:00:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 14:00:27,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:27,715 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:27,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:00:27,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 14:00:27,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:00:27,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1526476113, now seen corresponding path program 1 times [2022-11-23 14:00:27,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:27,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548988529] [2022-11-23 14:00:27,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:27,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:00:28,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:28,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548988529] [2022-11-23 14:00:28,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548988529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:00:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701952605] [2022-11-23 14:00:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:28,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:00:28,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:00:28,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:00:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05e88297-71d2-46b0-9ef1-1357fc03ce29/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:00:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:28,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:00:28,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:00:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:00:28,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:00:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:00:28,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701952605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:00:28,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1162717023] [2022-11-23 14:00:28,621 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-23 14:00:28,622 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:00:28,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:00:28,622 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:00:28,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:01:25,472 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:01:25,770 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-23 14:01:25,836 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 259 for LOIs [2022-11-23 14:01:25,914 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 454 for LOIs [2022-11-23 14:01:26,252 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 14:01:26,551 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:02:02,329 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:10,462 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:21,181 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 512 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:36,183 WARN L233 SmtUtils]: Spent 14.66s on a formula simplification. DAG size of input: 623 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:47,366 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 573 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:02:55,474 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 575 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:03:05,605 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 531 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:03:16,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1162717023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:03:16,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:03:16,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-23 14:03:16,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236800184] [2022-11-23 14:03:16,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:03:16,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 14:03:16,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:03:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 14:03:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:03:16,175 INFO L87 Difference]: Start difference. First operand 504 states and 761 transitions. Second operand has 30 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19)