./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI --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 cc6bd9a8e81eed69bb1e052a3e58ea0f1400924f4533cb09f3cdffebd7dfcd4d --- 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-5e519f3 [2022-11-03 03:28:38,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:28:38,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:28:38,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:28:38,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:28:38,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:28:38,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:28:38,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:28:38,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:28:38,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:28:38,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:28:38,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:28:38,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:28:38,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:28:38,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:28:38,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:28:38,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:28:38,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:28:38,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:28:38,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:28:38,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:28:38,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:28:38,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:28:38,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:28:38,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:28:38,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:28:38,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:28:38,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:28:38,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:28:38,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:28:38,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:28:38,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:28:38,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:28:38,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:28:38,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:28:38,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:28:38,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:28:38,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:28:38,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:28:38,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:28:38,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:28:38,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:28:38,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:28:38,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:28:38,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:28:38,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:28:38,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:28:38,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:28:38,356 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:28:38,356 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:28:38,356 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:28:38,357 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:28:38,357 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:28:38,357 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:28:38,357 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:28:38,358 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:28:38,358 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:28:38,358 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:28:38,359 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:28:38,359 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:28:38,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:28:38,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:28:38,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:28:38,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:28:38,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:28:38,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:28:38,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:28:38,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:28:38,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:28:38,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:28:38,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:28:38,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:28:38,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:28:38,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:28:38,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:38,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:28:38,365 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:28:38,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:28:38,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:28:38,365 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:28:38,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:28:38,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:28:38,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:28:38,367 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_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6bd9a8e81eed69bb1e052a3e58ea0f1400924f4533cb09f3cdffebd7dfcd4d [2022-11-03 03:28:38,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:28:38,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:28:38,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:28:38,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:28:38,726 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:28:38,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec7_product17.cil.c [2022-11-03 03:28:38,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/data/f80bb84ed/8d92a6edf2a847ab89d29248d7fc09fb/FLAGe97b49fda [2022-11-03 03:28:39,636 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:28:39,637 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/sv-benchmarks/c/product-lines/email_spec7_product17.cil.c [2022-11-03 03:28:39,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/data/f80bb84ed/8d92a6edf2a847ab89d29248d7fc09fb/FLAGe97b49fda [2022-11-03 03:28:39,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/data/f80bb84ed/8d92a6edf2a847ab89d29248d7fc09fb [2022-11-03 03:28:39,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:28:39,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:28:39,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:39,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:28:39,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:28:39,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:39" (1/1) ... [2022-11-03 03:28:39,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43949f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:39, skipping insertion in model container [2022-11-03 03:28:39,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:39" (1/1) ... [2022-11-03 03:28:39,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:28:39,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:28:40,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/sv-benchmarks/c/product-lines/email_spec7_product17.cil.c[48205,48218] [2022-11-03 03:28:40,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:40,730 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:28:40,824 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/sv-benchmarks/c/product-lines/email_spec7_product17.cil.c[48205,48218] [2022-11-03 03:28:40,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:40,883 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:28:40,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40 WrapperNode [2022-11-03 03:28:40,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:40,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:40,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:28:40,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:28:40,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:40,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:40,981 INFO L138 Inliner]: procedures = 127, calls = 205, calls flagged for inlining = 54, calls inlined = 47, statements flattened = 914 [2022-11-03 03:28:40,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:40,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:28:40,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:28:40,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:28:40,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:40,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:28:41,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:28:41,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:28:41,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:28:41,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (1/1) ... [2022-11-03 03:28:41,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:41,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:41,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:28:41,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:28:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:28:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:28:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:28:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:28:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-11-03 03:28:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-11-03 03:28:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:28:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:28:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:28:41,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:28:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:28:41,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:28:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:28:41,235 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:28:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 03:28:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 03:28:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:28:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:28:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:28:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:28:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:28:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:28:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:28:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:28:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 03:28:41,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 03:28:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:28:41,238 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:28:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:28:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:28:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:28:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:28:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:28:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:28:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:28:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:28:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:28:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:28:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:28:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:28:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:28:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:28:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:28:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:28:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:28:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:28:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:28:41,491 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:28:41,498 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:28:42,404 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:28:43,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:28:43,069 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:28:43,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:43 BoogieIcfgContainer [2022-11-03 03:28:43,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:28:43,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:28:43,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:28:43,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:28:43,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:28:39" (1/3) ... [2022-11-03 03:28:43,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a6075b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:43, skipping insertion in model container [2022-11-03 03:28:43,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:40" (2/3) ... [2022-11-03 03:28:43,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a6075b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:43, skipping insertion in model container [2022-11-03 03:28:43,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:43" (3/3) ... [2022-11-03 03:28:43,087 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product17.cil.c [2022-11-03 03:28:43,111 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:28:43,111 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:28:43,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:28:43,222 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;@3920cde2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:28:43,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:28:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 98 states have internal predecessors, (127), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-03 03:28:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 03:28:43,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:43,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:43,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash -239688259, now seen corresponding path program 1 times [2022-11-03 03:28:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:43,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253808144] [2022-11-03 03:28:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:43,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:28:43,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:43,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253808144] [2022-11-03 03:28:43,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253808144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:43,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:43,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:28:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361347314] [2022-11-03 03:28:43,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:43,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:28:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:28:43,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:28:43,795 INFO L87 Difference]: Start difference. First operand has 166 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 98 states have internal predecessors, (127), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:28:44,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:44,023 INFO L93 Difference]: Finished difference Result 240 states and 317 transitions. [2022-11-03 03:28:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:28:44,026 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-11-03 03:28:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:44,042 INFO L225 Difference]: With dead ends: 240 [2022-11-03 03:28:44,045 INFO L226 Difference]: Without dead ends: 163 [2022-11-03 03:28:44,051 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 [2022-11-03 03:28:44,055 INFO L413 NwaCegarLoop]: 188 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, 188 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 [2022-11-03 03:28:44,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:28:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-03 03:28:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-03 03:28:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 93 states have (on average 1.3010752688172043) internal successors, (121), 95 states have internal predecessors, (121), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-03 03:28:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 216 transitions. [2022-11-03 03:28:44,112 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 216 transitions. Word has length 60 [2022-11-03 03:28:44,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:44,114 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 216 transitions. [2022-11-03 03:28:44,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:28:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 216 transitions. [2022-11-03 03:28:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 03:28:44,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:44,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:28:44,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2000585565, now seen corresponding path program 1 times [2022-11-03 03:28:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:44,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917498965] [2022-11-03 03:28:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:44,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:28:44,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:44,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917498965] [2022-11-03 03:28:44,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917498965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:44,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:44,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:44,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800950155] [2022-11-03 03:28:44,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:44,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:44,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:44,402 INFO L87 Difference]: Start difference. First operand 163 states and 216 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:28:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:44,529 INFO L93 Difference]: Finished difference Result 236 states and 302 transitions. [2022-11-03 03:28:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:44,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-03 03:28:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:44,533 INFO L225 Difference]: With dead ends: 236 [2022-11-03 03:28:44,533 INFO L226 Difference]: Without dead ends: 165 [2022-11-03 03:28:44,534 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 [2022-11-03 03:28:44,536 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 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 [2022-11-03 03:28:44,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:28:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-03 03:28:44,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-03 03:28:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 95 states have (on average 1.2947368421052632) internal successors, (123), 97 states have internal predecessors, (123), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-03 03:28:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2022-11-03 03:28:44,567 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 61 [2022-11-03 03:28:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:44,570 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2022-11-03 03:28:44,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:28:44,571 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2022-11-03 03:28:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 03:28:44,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:44,581 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] [2022-11-03 03:28:44,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:28:44,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash -189394315, now seen corresponding path program 1 times [2022-11-03 03:28:44,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:44,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226937580] [2022-11-03 03:28:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:28:44,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:44,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226937580] [2022-11-03 03:28:44,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226937580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:44,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:44,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98439034] [2022-11-03 03:28:44,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:44,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:44,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:44,741 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:28:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:44,902 INFO L93 Difference]: Finished difference Result 365 states and 503 transitions. [2022-11-03 03:28:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:44,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-03 03:28:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:44,909 INFO L225 Difference]: With dead ends: 365 [2022-11-03 03:28:44,909 INFO L226 Difference]: Without dead ends: 218 [2022-11-03 03:28:44,911 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 [2022-11-03 03:28:44,912 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 59 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 387 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 [2022-11-03 03:28:44,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 387 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:28:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-03 03:28:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2022-11-03 03:28:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 129 states have (on average 1.37984496124031) internal successors, (178), 131 states have internal predecessors, (178), 62 states have call successors, (62), 21 states have call predecessors, (62), 21 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 03:28:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 301 transitions. [2022-11-03 03:28:44,937 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 301 transitions. Word has length 66 [2022-11-03 03:28:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:44,938 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 301 transitions. [2022-11-03 03:28:44,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:28:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 301 transitions. [2022-11-03 03:28:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:28:44,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:44,941 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] [2022-11-03 03:28:44,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:28:44,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash 387197810, now seen corresponding path program 1 times [2022-11-03 03:28:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:44,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253128356] [2022-11-03 03:28:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:44,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:28:45,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:45,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253128356] [2022-11-03 03:28:45,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253128356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:45,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726771714] [2022-11-03 03:28:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:45,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:45,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:45,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:45,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:28:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:45,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:28:45,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:28:45,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:28:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:28:45,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726771714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:28:45,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [994501389] [2022-11-03 03:28:45,871 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-03 03:28:45,871 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:28:45,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:28:45,884 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:28:45,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:29:16,055 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 03:29:16,512 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 03:29:16,869 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:30:00,711 WARN L234 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 504 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:30:07,626 WARN L234 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 514 DAG size of output: 293 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:30:20,723 WARN L234 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 583 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:30:32,678 WARN L234 SmtUtils]: Spent 11.40s on a formula simplification. DAG size of input: 570 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:30:43,570 WARN L234 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 570 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:30:54,401 WARN L234 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 568 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:30:55,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [994501389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:55,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:30:55,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 03:30:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315835047] [2022-11-03 03:30:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:55,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 03:30:55,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 03:30:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:30:55,922 INFO L87 Difference]: Start difference. First operand 213 states and 301 transitions. Second operand has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 03:31:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:05,252 INFO L93 Difference]: Finished difference Result 508 states and 769 transitions. [2022-11-03 03:31:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 03:31:05,254 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 67 [2022-11-03 03:31:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:05,257 INFO L225 Difference]: With dead ends: 508 [2022-11-03 03:31:05,257 INFO L226 Difference]: Without dead ends: 313 [2022-11-03 03:31:05,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 99.0s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:31:05,260 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 203 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:05,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 2598 Invalid, 1706 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 03:31:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-03 03:31:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 236. [2022-11-03 03:31:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 151 states have (on average 1.3973509933774835) internal successors, (211), 153 states have internal predecessors, (211), 62 states have call successors, (62), 22 states have call predecessors, (62), 22 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 03:31:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 334 transitions. [2022-11-03 03:31:05,400 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 334 transitions. Word has length 67 [2022-11-03 03:31:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:05,401 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 334 transitions. [2022-11-03 03:31:05,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 03:31:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 334 transitions. [2022-11-03 03:31:05,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 03:31:05,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:05,405 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:05,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:31:05,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:05,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:05,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2111884237, now seen corresponding path program 1 times [2022-11-03 03:31:05,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:05,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268447626] [2022-11-03 03:31:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:05,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:31:05,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268447626] [2022-11-03 03:31:05,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268447626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:05,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:05,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:05,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904467035] [2022-11-03 03:31:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:05,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:05,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:05,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:05,736 INFO L87 Difference]: Start difference. First operand 236 states and 334 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:31:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:06,097 INFO L93 Difference]: Finished difference Result 575 states and 848 transitions. [2022-11-03 03:31:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-03 03:31:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:06,102 INFO L225 Difference]: With dead ends: 575 [2022-11-03 03:31:06,102 INFO L226 Difference]: Without dead ends: 363 [2022-11-03 03:31:06,103 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 [2022-11-03 03:31:06,104 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 57 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 393 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 [2022-11-03 03:31:06,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 393 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:31:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-03 03:31:06,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 358. [2022-11-03 03:31:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 242 states have (on average 1.4504132231404958) internal successors, (351), 244 states have internal predecessors, (351), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-03 03:31:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 536 transitions. [2022-11-03 03:31:06,344 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 536 transitions. Word has length 72 [2022-11-03 03:31:06,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:06,345 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 536 transitions. [2022-11-03 03:31:06,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:31:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 536 transitions. [2022-11-03 03:31:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 03:31:06,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:06,354 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:06,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:31:06,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash -333924249, now seen corresponding path program 1 times [2022-11-03 03:31:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:06,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405908358] [2022-11-03 03:31:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:31:06,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:06,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405908358] [2022-11-03 03:31:06,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405908358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:06,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431715637] [2022-11-03 03:31:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:06,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:06,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:06,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:06,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:31:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:06,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:31:06,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:31:06,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:31:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:31:06,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431715637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:31:06,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1668536027] [2022-11-03 03:31:06,990 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-03 03:31:06,990 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:31:06,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:31:06,992 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:31:06,994 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:31:44,035 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 03:31:44,363 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 03:31:44,674 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-11-03 03:31:46,246 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-11-03 03:31:46,284 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-11-03 03:31:50,150 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 237 for LOIs [2022-11-03 03:31:50,218 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 250 for LOIs [2022-11-03 03:31:55,491 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 441 for LOIs [2022-11-03 03:31:55,821 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-11-03 03:31:55,859 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 485 for LOIs [2022-11-03 03:31:59,243 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:32:12,268 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:18,476 WARN L234 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:48,780 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 504 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:19,891 WARN L234 SmtUtils]: Spent 23.10s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:43,636 WARN L234 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 480 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:22,731 WARN L234 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 492 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:29,438 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 514 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:36,034 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 441 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:42,785 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 447 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:49,712 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 540 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:56,329 WARN L234 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 540 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:56,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1668536027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:56,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:34:56,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-03 03:34:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617850935] [2022-11-03 03:34:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:56,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 03:34:56,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 03:34:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3128, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 03:34:56,337 INFO L87 Difference]: Start difference. First operand 358 states and 536 transitions. Second operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:35:19,336 WARN L234 SmtUtils]: Spent 20.26s on a formula simplification. DAG size of input: 564 DAG size of output: 437 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:49,574 WARN L234 SmtUtils]: Spent 9.67s on a formula simplification. DAG size of input: 584 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:36:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:14,407 INFO L93 Difference]: Finished difference Result 861 states and 1343 transitions. [2022-11-03 03:36:14,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-03 03:36:14,408 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 73 [2022-11-03 03:36:14,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:14,412 INFO L225 Difference]: With dead ends: 861 [2022-11-03 03:36:14,413 INFO L226 Difference]: Without dead ends: 566 [2022-11-03 03:36:14,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 230.5s TimeCoverageRelationStatistics Valid=269, Invalid=4423, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 03:36:14,416 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 300 mSDsluCounter, 4274 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 4381 SdHoareTripleChecker+Invalid, 6034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:14,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 4381 Invalid, 6034 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [51 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time] [2022-11-03 03:36:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-03 03:36:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 450. [2022-11-03 03:36:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 312 states have (on average 1.4615384615384615) internal successors, (456), 317 states have internal predecessors, (456), 108 states have call successors, (108), 31 states have call predecessors, (108), 29 states have return successors, (108), 101 states have call predecessors, (108), 107 states have call successors, (108) [2022-11-03 03:36:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 672 transitions. [2022-11-03 03:36:14,699 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 672 transitions. Word has length 73 [2022-11-03 03:36:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:14,699 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 672 transitions. [2022-11-03 03:36:14,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:36:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 672 transitions. [2022-11-03 03:36:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 03:36:14,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:14,702 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] [2022-11-03 03:36:14,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:14,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:36:14,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1218619163, now seen corresponding path program 1 times [2022-11-03 03:36:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:14,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665386334] [2022-11-03 03:36:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:14,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:36:15,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665386334] [2022-11-03 03:36:15,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665386334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453940727] [2022-11-03 03:36:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:15,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:15,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:15,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:15,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192d1154-1bc8-468b-8de4-09ebe51d6735/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:36:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:15,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:36:15,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:36:15,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:36:15,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453940727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:36:15,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [168733571] [2022-11-03 03:36:15,522 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-03 03:36:15,522 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:15,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:15,523 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:15,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:38:13,080 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 03:38:13,392 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-11-03 03:38:13,693 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-11-03 03:38:13,990 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 232 for LOIs [2022-11-03 03:38:15,268 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-03 03:38:15,330 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 216 for LOIs [2022-11-03 03:38:15,364 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 03:38:15,725 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 232 for LOIs [2022-11-03 03:38:18,761 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 240 for LOIs [2022-11-03 03:38:18,808 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 233 for LOIs [2022-11-03 03:38:21,167 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 226 for LOIs [2022-11-03 03:38:21,196 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 226 for LOIs [2022-11-03 03:38:21,233 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 431 for LOIs [2022-11-03 03:38:25,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:38:38,238 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:44,104 WARN L234 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:12,920 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 504 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:19,436 WARN L234 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 514 DAG size of output: 293 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:36,926 WARN L234 SmtUtils]: Spent 10.30s on a formula simplification. DAG size of input: 529 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:53,922 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 524 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:12,147 WARN L234 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 527 DAG size of output: 304 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:28,746 WARN L234 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 431 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:35,262 WARN L234 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 453 DAG size of output: 251 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:16,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [168733571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:16,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:41:16,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-11-03 03:41:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305864496] [2022-11-03 03:41:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-03 03:41:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-03 03:41:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3730, Unknown=0, NotChecked=0, Total=3906 [2022-11-03 03:41:16,487 INFO L87 Difference]: Start difference. First operand 450 states and 672 transitions. Second operand has 58 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)