./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9 --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 3f09e5adfeee9c308429dc6a96730836c8dd32d7c1bd2833eb57924261e76e35 --- 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-6b4ec56 [2022-11-20 20:07:48,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:07:48,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:07:48,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:07:48,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:07:48,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:07:48,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:07:48,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:07:48,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:07:48,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:07:48,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:07:48,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:07:48,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:07:48,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:07:48,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:07:48,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:07:48,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:07:48,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:07:48,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:07:48,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:07:48,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:07:48,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:07:48,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:07:48,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:07:48,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:07:48,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:07:48,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:07:48,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:07:48,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:07:48,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:07:48,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:07:48,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:07:48,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:07:48,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:07:48,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:07:48,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:07:48,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:07:48,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:07:48,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:07:48,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:07:48,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:07:48,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:07:48,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:07:48,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:07:48,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:07:48,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:07:48,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:07:48,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:07:48,454 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:07:48,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:07:48,455 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:07:48,455 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:07:48,456 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:07:48,457 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:07:48,457 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:07:48,457 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:07:48,458 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:07:48,458 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:07:48,458 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:07:48,458 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:07:48,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:07:48,460 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:07:48,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:07:48,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:07:48,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:07:48,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:07:48,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:07:48,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:07:48,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:07:48,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:07:48,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:07:48,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:07:48,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:07:48,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:07:48,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:07:48,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:07:48,465 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:07:48,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:07:48,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:07:48,465 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:07:48,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:07:48,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:07:48,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:07:48,467 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_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f09e5adfeee9c308429dc6a96730836c8dd32d7c1bd2833eb57924261e76e35 [2022-11-20 20:07:48,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:07:48,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:07:48,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:07:48,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:07:48,783 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:07:48,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec27_product33.cil.c [2022-11-20 20:07:51,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:07:52,239 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:07:52,239 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/sv-benchmarks/c/product-lines/email_spec27_product33.cil.c [2022-11-20 20:07:52,268 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/data/4049c479b/cd2b8ad4cb9941b7a6a5ed2694b8d174/FLAG5ff5e3909 [2022-11-20 20:07:52,290 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/data/4049c479b/cd2b8ad4cb9941b7a6a5ed2694b8d174 [2022-11-20 20:07:52,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:07:52,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:07:52,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:07:52,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:07:52,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:07:52,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:07:52" (1/1) ... [2022-11-20 20:07:52,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337bce1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:52, skipping insertion in model container [2022-11-20 20:07:52,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:07:52" (1/1) ... [2022-11-20 20:07:52,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:07:52,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:07:52,562 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_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/sv-benchmarks/c/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-11-20 20:07:53,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:07:53,072 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:07:53,085 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_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/sv-benchmarks/c/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-11-20 20:07:53,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:07:53,240 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:07:53,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53 WrapperNode [2022-11-20 20:07:53,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:07:53,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:07:53,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:07:53,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:07:53,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,356 INFO L138 Inliner]: procedures = 134, calls = 229, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1062 [2022-11-20 20:07:53,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:07:53,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:07:53,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:07:53,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:07:53,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:07:53,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:07:53,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:07:53,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:07:53,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (1/1) ... [2022-11-20 20:07:53,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:07:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:07:53,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:07:53,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:07:53,571 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:07:53,571 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:07:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:07:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:07:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:07:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:07:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:07:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:07:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:07:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:07:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:07:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:07:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:07:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:07:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:07:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:07:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:07:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:07:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:07:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:07:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:07:53,575 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:07:53,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:07:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-20 20:07:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-20 20:07:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:07:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:07:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:07:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:07:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:07:53,579 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:07:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:07:53,579 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:07:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:07:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:07:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:07:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:07:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:07:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-20 20:07:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-20 20:07:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 20:07:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 20:07:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:07:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:07:53,581 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:07:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:07:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:07:53,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:07:53,582 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:07:53,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:07:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:07:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:07:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:07:53,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:07:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:07:53,928 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:07:53,930 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:07:55,040 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:07:55,620 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:07:55,620 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:07:55,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:07:55 BoogieIcfgContainer [2022-11-20 20:07:55,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:07:55,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:07:55,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:07:55,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:07:55,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:07:52" (1/3) ... [2022-11-20 20:07:55,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b678ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:07:55, skipping insertion in model container [2022-11-20 20:07:55,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:53" (2/3) ... [2022-11-20 20:07:55,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b678ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:07:55, skipping insertion in model container [2022-11-20 20:07:55,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:07:55" (3/3) ... [2022-11-20 20:07:55,634 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.c [2022-11-20 20:07:55,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:07:55,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:07:55,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:07:55,736 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;@1a886257, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:07:55,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:07:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 130 states have internal predecessors, (164), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-20 20:07:55,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 20:07:55,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:55,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:07:55,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:07:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1578590042, now seen corresponding path program 1 times [2022-11-20 20:07:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:07:55,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191590131] [2022-11-20 20:07:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:07:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:07:56,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:07:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191590131] [2022-11-20 20:07:56,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191590131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:56,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:56,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:07:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508279397] [2022-11-20 20:07:56,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:56,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:07:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:07:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:07:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:07:56,338 INFO L87 Difference]: Start difference. First operand has 218 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 130 states have internal predecessors, (164), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:07:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:56,585 INFO L93 Difference]: Finished difference Result 353 states and 466 transitions. [2022-11-20 20:07:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:07:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 92 [2022-11-20 20:07:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:56,610 INFO L225 Difference]: With dead ends: 353 [2022-11-20 20:07:56,611 INFO L226 Difference]: Without dead ends: 215 [2022-11-20 20:07:56,622 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 [2022-11-20 20:07:56,627 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:56,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:07:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-20 20:07:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-11-20 20:07:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 127 states have internal predecessors, (158), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-20 20:07:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 287 transitions. [2022-11-20 20:07:56,722 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 287 transitions. Word has length 92 [2022-11-20 20:07:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:56,724 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 287 transitions. [2022-11-20 20:07:56,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:07:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 287 transitions. [2022-11-20 20:07:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 20:07:56,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:56,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:07:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:07:56,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:07:56,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash -916514765, now seen corresponding path program 1 times [2022-11-20 20:07:56,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:07:56,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188454758] [2022-11-20 20:07:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:56,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:07:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:07:56,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:07:56,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188454758] [2022-11-20 20:07:56,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188454758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:56,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:56,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:07:56,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417046322] [2022-11-20 20:07:56,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:56,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:07:56,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:07:56,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:07:56,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:07:56,987 INFO L87 Difference]: Start difference. First operand 215 states and 287 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:07:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:57,161 INFO L93 Difference]: Finished difference Result 349 states and 454 transitions. [2022-11-20 20:07:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:07:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 93 [2022-11-20 20:07:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:57,168 INFO L225 Difference]: With dead ends: 349 [2022-11-20 20:07:57,168 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 20:07:57,173 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 [2022-11-20 20:07:57,177 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:57,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 491 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:07:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 20:07:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-11-20 20:07:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 126 states have (on average 1.2698412698412698) internal successors, (160), 129 states have internal predecessors, (160), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-20 20:07:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2022-11-20 20:07:57,201 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 93 [2022-11-20 20:07:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:57,202 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2022-11-20 20:07:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:07:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2022-11-20 20:07:57,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 20:07:57,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:57,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:07:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:07:57,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:07:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1051283549, now seen corresponding path program 1 times [2022-11-20 20:07:57,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:07:57,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847131159] [2022-11-20 20:07:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:07:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:07:57,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:07:57,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847131159] [2022-11-20 20:07:57,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847131159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:07:57,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:07:57,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:07:57,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632517095] [2022-11-20 20:07:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:07:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:07:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:07:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:07:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:07:57,452 INFO L87 Difference]: Start difference. First operand 217 states and 289 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:07:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:07:57,606 INFO L93 Difference]: Finished difference Result 464 states and 637 transitions. [2022-11-20 20:07:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:07:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 98 [2022-11-20 20:07:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:07:57,617 INFO L225 Difference]: With dead ends: 464 [2022-11-20 20:07:57,617 INFO L226 Difference]: Without dead ends: 265 [2022-11-20 20:07:57,621 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 [2022-11-20 20:07:57,624 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 57 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:07:57,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 497 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:07:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-20 20:07:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 260. [2022-11-20 20:07:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 161 states have internal predecessors, (213), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-20 20:07:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 364 transitions. [2022-11-20 20:07:57,647 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 364 transitions. Word has length 98 [2022-11-20 20:07:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:07:57,647 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 364 transitions. [2022-11-20 20:07:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:07:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 364 transitions. [2022-11-20 20:07:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 20:07:57,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:07:57,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:07:57,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:07:57,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:07:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:07:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -519996870, now seen corresponding path program 1 times [2022-11-20 20:07:57,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:07:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828906736] [2022-11-20 20:07:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:07:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:07:57,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:07:57,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828906736] [2022-11-20 20:07:57,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828906736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:07:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426634441] [2022-11-20 20:07:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:07:57,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:07:57,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:07:57,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:07:57,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:07:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:07:58,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:07:58,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:07:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:07:58,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:07:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:07:58,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426634441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:07:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877012193] [2022-11-20 20:07:58,561 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-20 20:07:58,561 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:07:58,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:07:58,570 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:07:58,571 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:08:41,120 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 20:08:41,414 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 477 for LOIs [2022-11-20 20:09:23,168 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-11-20 20:09:23,455 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:09:23,764 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 475 for LOIs [2022-11-20 20:10:09,781 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-20 20:10:10,583 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-20 20:10:10,624 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 436 for LOIs [2022-11-20 20:10:10,873 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-20 20:10:10,943 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-20 20:10:10,986 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 450 for LOIs [2022-11-20 20:10:11,658 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-11-20 20:10:11,720 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:10:54,070 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 498 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:00,943 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 508 DAG size of output: 302 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:12,014 WARN L233 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 587 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:17,526 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 561 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:34,899 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 580 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:40,703 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 477 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:11:46,787 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 491 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:03,066 WARN L233 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 539 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:16,569 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 535 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:26,783 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 475 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:12:32,472 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 487 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:05,658 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 535 DAG size of output: 375 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:14,679 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 577 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:29,423 WARN L233 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 586 DAG size of output: 460 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:40,648 WARN L233 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 594 DAG size of output: 468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:23,078 WARN L233 SmtUtils]: Spent 16.10s on a formula simplification. DAG size of input: 645 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:37,504 WARN L233 SmtUtils]: Spent 13.43s on a formula simplification. DAG size of input: 642 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:49,661 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 474 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:09,848 WARN L233 SmtUtils]: Spent 15.18s on a formula simplification. DAG size of input: 702 DAG size of output: 567 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:21,716 WARN L233 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 702 DAG size of output: 505 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:21,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1877012193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:21,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:15:21,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [4, 4, 4] total 72 [2022-11-20 20:15:21,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528745271] [2022-11-20 20:15:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:21,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-20 20:15:21,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-20 20:15:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=4867, Unknown=0, NotChecked=0, Total=5112 [2022-11-20 20:15:21,727 INFO L87 Difference]: Start difference. First operand 260 states and 364 transitions. Second operand has 67 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 41 states have internal predecessors, (50), 20 states have call successors, (21), 13 states have call predecessors, (21), 11 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-20 20:16:22,029 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 473 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:16:55,527 INFO L93 Difference]: Finished difference Result 796 states and 1198 transitions. [2022-11-20 20:16:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-20 20:16:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 41 states have internal predecessors, (50), 20 states have call successors, (21), 13 states have call predecessors, (21), 11 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 99 [2022-11-20 20:16:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:16:55,533 INFO L225 Difference]: With dead ends: 796 [2022-11-20 20:16:55,533 INFO L226 Difference]: Without dead ends: 554 [2022-11-20 20:16:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 350.4s TimeCoverageRelationStatistics Valid=318, Invalid=6488, Unknown=0, NotChecked=0, Total=6806 [2022-11-20 20:16:55,538 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 439 mSDsluCounter, 9279 mSDsCounter, 0 mSdLazyCounter, 12142 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 9634 SdHoareTripleChecker+Invalid, 12223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 12142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:16:55,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 9634 Invalid, 12223 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [81 Valid, 12142 Invalid, 0 Unknown, 0 Unchecked, 52.0s Time] [2022-11-20 20:16:55,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-20 20:16:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 369. [2022-11-20 20:16:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 234 states have (on average 1.3333333333333333) internal successors, (312), 238 states have internal predecessors, (312), 99 states have call successors, (99), 36 states have call predecessors, (99), 35 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2022-11-20 20:16:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 510 transitions. [2022-11-20 20:16:55,812 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 510 transitions. Word has length 99 [2022-11-20 20:16:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:16:55,813 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 510 transitions. [2022-11-20 20:16:55,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 41 states have internal predecessors, (50), 20 states have call successors, (21), 13 states have call predecessors, (21), 11 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-20 20:16:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 510 transitions. [2022-11-20 20:16:55,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 20:16:55,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:16:55,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:16:55,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:16:56,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:16:56,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:16:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:16:56,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1070447428, now seen corresponding path program 1 times [2022-11-20 20:16:56,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:16:56,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5359634] [2022-11-20 20:16:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:16:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:16:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:16:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:16:56,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:16:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5359634] [2022-11-20 20:16:56,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5359634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:16:56,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343575768] [2022-11-20 20:16:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:16:56,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:16:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:16:56,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:16:56,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed64e8b-d6e3-4bd1-b90d-e724029ca1ce/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:16:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:16:56,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:16:56,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:16:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:16:56,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:16:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:16:56,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343575768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:16:56,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167457319] [2022-11-20 20:16:56,687 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-11-20 20:16:56,687 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:16:56,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:16:56,689 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:16:56,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:17:29,499 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 20:17:29,797 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-11-20 20:17:31,633 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-20 20:17:31,678 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:17:31,966 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-11-20 20:18:32,946 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 429 for LOIs [2022-11-20 20:18:34,959 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-11-20 20:18:35,545 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-20 20:18:35,616 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-20 20:18:35,664 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-20 20:18:39,103 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-20 20:18:39,167 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-11-20 20:18:39,219 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:19:21,714 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 498 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:28,667 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 508 DAG size of output: 302 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:59,124 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 473 DAG size of output: 279 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:25,494 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 452 DAG size of output: 269 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:31,783 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 478 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:57,245 WARN L233 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 535 DAG size of output: 375 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:06,021 WARN L233 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 577 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:17,228 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 586 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)