./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/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_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/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_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/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 82ac70e4cab6ba17956a8bc3031bcd401426df4beecacca096cae721fbfd8afd --- 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 02:10:56,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:10:56,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:10:56,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:10:56,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:10:56,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:10:56,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:10:56,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:10:56,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:10:56,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:10:56,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:10:56,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:10:56,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:10:56,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:10:56,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:10:56,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:10:56,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:10:56,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:10:56,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:10:56,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:10:56,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:10:56,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:10:56,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:10:56,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:10:56,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:10:56,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:10:56,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:10:56,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:10:56,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:10:56,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:10:56,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:10:56,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:10:56,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:10:56,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:10:56,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:10:56,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:10:56,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:10:56,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:10:56,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:10:56,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:10:56,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:10:56,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:10:56,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:10:56,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:10:56,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:10:56,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:10:56,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:10:56,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:10:56,912 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:10:56,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:10:56,913 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:10:56,913 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:10:56,914 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:10:56,915 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:10:56,915 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:10:56,915 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:10:56,915 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:10:56,915 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:10:56,916 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:10:56,916 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:10:56,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:10:56,917 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:10:56,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:10:56,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:10:56,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:10:56,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:10:56,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:10:56,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:10:56,918 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:10:56,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:10:56,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:10:56,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:10:56,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:10:56,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:10:56,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:10:56,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:10:56,920 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:10:56,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:10:56,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:10:56,921 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:10:56,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:10:56,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:10:56,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:10:56,922 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_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82ac70e4cab6ba17956a8bc3031bcd401426df4beecacca096cae721fbfd8afd [2022-11-03 02:10:57,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:10:57,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:10:57,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:10:57,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:10:57,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:10:57,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c [2022-11-03 02:10:57,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/data/07c98f9fa/b79e8027780f4d328ce1b2a04124e53c/FLAGf0f5a17cb [2022-11-03 02:10:58,026 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:10:58,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c [2022-11-03 02:10:58,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/data/07c98f9fa/b79e8027780f4d328ce1b2a04124e53c/FLAGf0f5a17cb [2022-11-03 02:10:58,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/data/07c98f9fa/b79e8027780f4d328ce1b2a04124e53c [2022-11-03 02:10:58,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:10:58,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:10:58,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:10:58,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:10:58,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:10:58,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:10:58" (1/1) ... [2022-11-03 02:10:58,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293da0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:58, skipping insertion in model container [2022-11-03 02:10:58,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:10:58" (1/1) ... [2022-11-03 02:10:58,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:10:58,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:10:58,841 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_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c[24949,24962] [2022-11-03 02:10:59,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:10:59,028 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:10:59,081 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_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c[24949,24962] [2022-11-03 02:10:59,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:10:59,156 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:10:59,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59 WrapperNode [2022-11-03 02:10:59,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:10:59,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:10:59,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:10:59,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:10:59,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,252 INFO L138 Inliner]: procedures = 132, calls = 230, calls flagged for inlining = 61, calls inlined = 58, statements flattened = 1109 [2022-11-03 02:10:59,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:10:59,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:10:59,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:10:59,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:10:59,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,301 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:10:59,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:10:59,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:10:59,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:10:59,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (1/1) ... [2022-11-03 02:10:59,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:10:59,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:10:59,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:10:59,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:10:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:10:59,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:10:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:10:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:10:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:10:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:10:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:10:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:10:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:10:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:10:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:10:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:10:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:10:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:10:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:10:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:10:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:10:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:10:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:10:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:10:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:10:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:10:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:10:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 02:10:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 02:10:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:10:59,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:10:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:10:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:10:59,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:10:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:10:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:10:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:10:59,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:10:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:10:59,447 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:10:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:10:59,447 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:10:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:10:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:10:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:10:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:10:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:10:59,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:10:59,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:10:59,449 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:10:59,450 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:10:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:10:59,451 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:10:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:10:59,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:10:59,666 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:10:59,669 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:11:00,874 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:11:01,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:11:01,479 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:11:01,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:01 BoogieIcfgContainer [2022-11-03 02:11:01,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:11:01,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:11:01,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:11:01,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:11:01,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:10:58" (1/3) ... [2022-11-03 02:11:01,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612c449f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:01, skipping insertion in model container [2022-11-03 02:11:01,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:59" (2/3) ... [2022-11-03 02:11:01,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612c449f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:01, skipping insertion in model container [2022-11-03 02:11:01,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:01" (3/3) ... [2022-11-03 02:11:01,493 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product26.cil.c [2022-11-03 02:11:01,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:11:01,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:11:01,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:11:01,632 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;@63a8cf14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:11:01,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:11:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 118 states have internal predecessors, (149), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-03 02:11:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 02:11:01,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:01,662 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, 1, 1] [2022-11-03 02:11:01,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:01,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1313338490, now seen corresponding path program 1 times [2022-11-03 02:11:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:01,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898290416] [2022-11-03 02:11:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:02,117 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 02:11:02,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:02,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898290416] [2022-11-03 02:11:02,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898290416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:02,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:02,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:11:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971040525] [2022-11-03 02:11:02,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:02,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:11:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:11:02,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:11:02,161 INFO L87 Difference]: Start difference. First operand has 200 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 118 states have internal predecessors, (149), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 02:11:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:02,329 INFO L93 Difference]: Finished difference Result 308 states and 417 transitions. [2022-11-03 02:11:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:11:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 63 [2022-11-03 02:11:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:02,344 INFO L225 Difference]: With dead ends: 308 [2022-11-03 02:11:02,344 INFO L226 Difference]: Without dead ends: 197 [2022-11-03 02:11:02,349 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 02:11:02,353 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:02,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 230 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:11:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-03 02:11:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-03 02:11:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 111 states have (on average 1.2882882882882882) internal successors, (143), 115 states have internal predecessors, (143), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 02:11:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 266 transitions. [2022-11-03 02:11:02,415 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 266 transitions. Word has length 63 [2022-11-03 02:11:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:02,417 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 266 transitions. [2022-11-03 02:11:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 02:11:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 266 transitions. [2022-11-03 02:11:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:11:02,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:02,421 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, 1, 1, 1] [2022-11-03 02:11:02,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:11:02,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1425382826, now seen corresponding path program 1 times [2022-11-03 02:11:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:02,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693574973] [2022-11-03 02:11:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:02,704 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 02:11:02,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693574973] [2022-11-03 02:11:02,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693574973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:02,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:02,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260000173] [2022-11-03 02:11:02,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:02,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:02,708 INFO L87 Difference]: Start difference. First operand 197 states and 266 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 02:11:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:02,849 INFO L93 Difference]: Finished difference Result 304 states and 402 transitions. [2022-11-03 02:11:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:02,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 64 [2022-11-03 02:11:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:02,852 INFO L225 Difference]: With dead ends: 304 [2022-11-03 02:11:02,853 INFO L226 Difference]: Without dead ends: 199 [2022-11-03 02:11:02,854 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 02:11:02,855 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:02,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:11:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-03 02:11:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-03 02:11:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 117 states have internal predecessors, (145), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 02:11:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 268 transitions. [2022-11-03 02:11:02,890 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 268 transitions. Word has length 64 [2022-11-03 02:11:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:02,890 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 268 transitions. [2022-11-03 02:11:02,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 02:11:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 268 transitions. [2022-11-03 02:11:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:11:02,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:02,893 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] [2022-11-03 02:11:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:11:02,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash 171544941, now seen corresponding path program 1 times [2022-11-03 02:11:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:02,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758972641] [2022-11-03 02:11:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:03,015 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 02:11:03,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:03,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758972641] [2022-11-03 02:11:03,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758972641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:03,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:03,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99658784] [2022-11-03 02:11:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:03,019 INFO L87 Difference]: Start difference. First operand 199 states and 268 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, (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 02:11:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:03,149 INFO L93 Difference]: Finished difference Result 433 states and 603 transitions. [2022-11-03 02:11:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:03,150 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, (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 69 [2022-11-03 02:11:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:03,153 INFO L225 Difference]: With dead ends: 433 [2022-11-03 02:11:03,154 INFO L226 Difference]: Without dead ends: 252 [2022-11-03 02:11:03,156 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 02:11:03,163 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 59 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:03,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 472 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:11:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-03 02:11:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2022-11-03 02:11:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 151 states have internal predecessors, (200), 76 states have call successors, (76), 23 states have call predecessors, (76), 23 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-03 02:11:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 351 transitions. [2022-11-03 02:11:03,201 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 351 transitions. Word has length 69 [2022-11-03 02:11:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:03,204 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 351 transitions. [2022-11-03 02:11:03,204 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, (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 02:11:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 351 transitions. [2022-11-03 02:11:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:11:03,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:03,209 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] [2022-11-03 02:11:03,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:11:03,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2067936290, now seen corresponding path program 1 times [2022-11-03 02:11:03,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:03,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907926455] [2022-11-03 02:11:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:03,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:03,475 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 02:11:03,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:03,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907926455] [2022-11-03 02:11:03,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907926455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:03,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263695751] [2022-11-03 02:11:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:03,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:03,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:03,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:03,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:11:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:03,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:11:03,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:03,883 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 02:11:03,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:11:03,967 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 02:11:03,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263695751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:11:03,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151466463] [2022-11-03 02:11:03,988 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-03 02:11:03,989 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:11:03,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:11:03,998 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:11:03,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:11:50,825 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:11:51,168 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-03 02:11:51,533 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 471 for LOIs [2022-11-03 02:12:28,961 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-11-03 02:12:29,289 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-03 02:12:33,820 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-03 02:12:38,779 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-11-03 02:12:38,822 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-11-03 02:12:39,612 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 439 for LOIs [2022-11-03 02:12:39,923 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:12:53,625 WARN L234 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:59,805 WARN L234 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:07,180 WARN L234 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:14,143 WARN L234 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:29,208 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 490 DAG size of output: 314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:34,783 WARN L234 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 502 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:44,164 WARN L234 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:49,631 WARN L234 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 560 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:55,137 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 562 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:16,557 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 561 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:38,481 WARN L234 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 523 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:54,341 WARN L234 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 519 DAG size of output: 297 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:36,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1151466463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:36,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:15:36,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-11-03 02:15:36,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801575242] [2022-11-03 02:15:36,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:36,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 02:15:36,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:36,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 02:15:36,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2418, Unknown=0, NotChecked=0, Total=2550 [2022-11-03 02:15:36,433 INFO L87 Difference]: Start difference. First operand 247 states and 351 transitions. Second operand has 46 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 28 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 02:15:44,448 WARN L234 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 500 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:50,162 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 502 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:55,966 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 511 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:01,806 WARN L234 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 507 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:07,851 WARN L234 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 513 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:45,079 INFO L93 Difference]: Finished difference Result 635 states and 970 transitions. [2022-11-03 02:16:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-03 02:16:45,080 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 28 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 70 [2022-11-03 02:16:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:45,084 INFO L225 Difference]: With dead ends: 635 [2022-11-03 02:16:45,084 INFO L226 Difference]: Without dead ends: 406 [2022-11-03 02:16:45,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 219.1s TimeCoverageRelationStatistics Valid=207, Invalid=3575, Unknown=0, NotChecked=0, Total=3782 [2022-11-03 02:16:45,089 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 305 mSDsluCounter, 5729 mSDsCounter, 0 mSdLazyCounter, 6626 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 5799 SdHoareTripleChecker+Invalid, 6667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 6626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:45,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 5799 Invalid, 6667 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [41 Valid, 6626 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time] [2022-11-03 02:16:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-11-03 02:16:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 301. [2022-11-03 02:16:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 188 states have (on average 1.351063829787234) internal successors, (254), 192 states have internal predecessors, (254), 84 states have call successors, (84), 31 states have call predecessors, (84), 28 states have return successors, (83), 79 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-03 02:16:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 421 transitions. [2022-11-03 02:16:45,256 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 421 transitions. Word has length 70 [2022-11-03 02:16:45,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:45,257 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 421 transitions. [2022-11-03 02:16:45,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 28 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 02:16:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 421 transitions. [2022-11-03 02:16:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:16:45,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:45,259 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, 1, 1] [2022-11-03 02:16:45,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:45,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:45,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash 703972379, now seen corresponding path program 1 times [2022-11-03 02:16:45,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:45,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007008684] [2022-11-03 02:16:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:45,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:45,559 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 02:16:45,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:45,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007008684] [2022-11-03 02:16:45,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007008684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:45,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:45,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398636433] [2022-11-03 02:16:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:45,562 INFO L87 Difference]: Start difference. First operand 301 states and 421 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 02:16:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:45,910 INFO L93 Difference]: Finished difference Result 704 states and 1022 transitions. [2022-11-03 02:16:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 75 [2022-11-03 02:16:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:45,914 INFO L225 Difference]: With dead ends: 704 [2022-11-03 02:16:45,915 INFO L226 Difference]: Without dead ends: 429 [2022-11-03 02:16:45,916 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 02:16:45,917 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 57 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:45,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 478 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-03 02:16:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 422. [2022-11-03 02:16:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 278 states have (on average 1.4172661870503598) internal successors, (394), 282 states have internal predecessors, (394), 115 states have call successors, (115), 31 states have call predecessors, (115), 28 states have return successors, (114), 110 states have call predecessors, (114), 114 states have call successors, (114) [2022-11-03 02:16:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 623 transitions. [2022-11-03 02:16:46,177 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 623 transitions. Word has length 75 [2022-11-03 02:16:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:46,178 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 623 transitions. [2022-11-03 02:16:46,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 02:16:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 623 transitions. [2022-11-03 02:16:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:16:46,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:46,182 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, 1, 1, 1] [2022-11-03 02:16:46,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:16:46,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2079033167, now seen corresponding path program 1 times [2022-11-03 02:16:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:46,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707379387] [2022-11-03 02:16:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:46,319 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 02:16:46,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:46,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707379387] [2022-11-03 02:16:46,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707379387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:46,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111816337] [2022-11-03 02:16:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:46,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:46,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:46,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:46,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:16:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:46,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:16:46,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:46,706 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 02:16:46,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:46,779 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 02:16:46,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111816337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:46,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1707021860] [2022-11-03 02:16:46,783 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-03 02:16:46,784 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:16:46,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:16:46,785 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:16:46,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:17:38,420 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:17:38,752 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:17:39,080 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:17:52,572 WARN L234 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:58,745 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:22,822 WARN L234 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 490 DAG size of output: 314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:28,363 WARN L234 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 502 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:37,633 WARN L234 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:56,848 WARN L234 SmtUtils]: Spent 18.80s on a formula simplification. DAG size of input: 583 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:18,366 WARN L234 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 551 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:27,568 WARN L234 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 553 DAG size of output: 431 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:37,360 WARN L234 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 584 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:37,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1707021860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:37,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:37,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:19:37,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307697575] [2022-11-03 02:19:37,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:37,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:19:37,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:37,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:19:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:19:37,620 INFO L87 Difference]: Start difference. First operand 422 states and 623 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 02:19:56,441 WARN L234 SmtUtils]: Spent 17.24s on a formula simplification. DAG size of input: 475 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:02,698 WARN L234 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 531 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:08,387 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 532 DAG size of output: 370 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:14,034 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 530 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:20,429 WARN L234 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 531 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:26,784 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 529 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:34,464 INFO L93 Difference]: Finished difference Result 836 states and 1273 transitions. [2022-11-03 02:20:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 02:20:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 76 [2022-11-03 02:20:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:34,469 INFO L225 Difference]: With dead ends: 836 [2022-11-03 02:20:34,470 INFO L226 Difference]: Without dead ends: 507 [2022-11-03 02:20:34,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 165.8s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:20:34,472 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 190 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:34,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 3515 Invalid, 2031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:20:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-03 02:20:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 452. [2022-11-03 02:20:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 306 states have (on average 1.4215686274509804) internal successors, (435), 310 states have internal predecessors, (435), 116 states have call successors, (116), 32 states have call predecessors, (116), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2022-11-03 02:20:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 666 transitions. [2022-11-03 02:20:34,739 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 666 transitions. Word has length 76 [2022-11-03 02:20:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:34,740 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 666 transitions. [2022-11-03 02:20:34,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 02:20:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 666 transitions. [2022-11-03 02:20:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:20:34,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:34,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:34,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:34,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:20:34,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1044069344, now seen corresponding path program 1 times [2022-11-03 02:20:34,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:34,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676910906] [2022-11-03 02:20:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:34,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:35,175 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 02:20:35,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:35,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676910906] [2022-11-03 02:20:35,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676910906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:35,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106345724] [2022-11-03 02:20:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:35,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:35,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:35,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:35,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65fff36f-7f3d-4f73-b1c3-1a6433599a7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:20:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:35,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:20:35,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:35,522 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 02:20:35,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:20:35,602 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 02:20:35,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106345724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:20:35,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298131739] [2022-11-03 02:20:35,608 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-03 02:20:35,608 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:20:35,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:20:35,609 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:20:35,609 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:22:31,239 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:22:31,578 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 231 for LOIs [2022-11-03 02:22:31,642 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 230 for LOIs [2022-11-03 02:22:31,707 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 230 for LOIs [2022-11-03 02:22:33,206 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-11-03 02:22:33,270 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 210 for LOIs [2022-11-03 02:22:33,305 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-03 02:22:33,646 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 230 for LOIs [2022-11-03 02:22:34,310 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 240 for LOIs [2022-11-03 02:22:38,303 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 211 for LOIs [2022-11-03 02:22:38,340 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 220 for LOIs [2022-11-03 02:22:38,473 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 202 for LOIs [2022-11-03 02:22:38,506 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:22:53,072 WARN L234 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:00,265 WARN L234 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:07,992 WARN L234 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:15,434 WARN L234 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:31,145 WARN L234 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 490 DAG size of output: 314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:37,013 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 502 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:46,631 WARN L234 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)