./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh --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 979399ca852926e8ca1f854d8ed303a24eaf5d25d69a2db1d99b3449cc418039 --- 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-2329fc7 [2022-12-14 12:50:19,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:50:19,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:50:19,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:50:19,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:50:19,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:50:19,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:50:19,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:50:19,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:50:19,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:50:19,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:50:19,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:50:19,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:50:19,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:50:19,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:50:19,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:50:19,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:50:19,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:50:19,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:50:19,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:50:19,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:50:19,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:50:19,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:50:19,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:50:19,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:50:19,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:50:19,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:50:19,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:50:19,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:50:19,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:50:19,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:50:19,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:50:19,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:50:19,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:50:19,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:50:19,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:50:19,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:50:19,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:50:19,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:50:19,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:50:19,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:50:19,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:50:19,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:50:19,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:50:19,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:50:19,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:50:19,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:50:19,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:50:19,196 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:50:19,196 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:50:19,196 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:50:19,197 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:50:19,197 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:50:19,197 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:50:19,197 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:50:19,197 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:50:19,197 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:50:19,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:50:19,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:50:19,198 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:50:19,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:50:19,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:50:19,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:50:19,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:50:19,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:50:19,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:50:19,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:50:19,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:50:19,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:50:19,201 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:50:19,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:50:19,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:50:19,201 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:50:19,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:50:19,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:50:19,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:50:19,202 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_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 979399ca852926e8ca1f854d8ed303a24eaf5d25d69a2db1d99b3449cc418039 [2022-12-14 12:50:19,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:50:19,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:50:19,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:50:19,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:50:19,412 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:50:19,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec9_product35.cil.c [2022-12-14 12:50:22,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:50:22,282 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:50:22,282 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/sv-benchmarks/c/product-lines/email_spec9_product35.cil.c [2022-12-14 12:50:22,297 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/data/a8b2ca9fc/febd1fb61ee642399e5a59d965f27a25/FLAG6a890f529 [2022-12-14 12:50:22,309 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/data/a8b2ca9fc/febd1fb61ee642399e5a59d965f27a25 [2022-12-14 12:50:22,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:50:22,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:50:22,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:50:22,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:50:22,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:50:22,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:50:22" (1/1) ... [2022-12-14 12:50:22,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1379b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:22, skipping insertion in model container [2022-12-14 12:50:22,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:50:22" (1/1) ... [2022-12-14 12:50:22,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:50:22,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:50:22,650 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,655 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,661 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,787 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,819 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/sv-benchmarks/c/product-lines/email_spec9_product35.cil.c[46615,46628] [2022-12-14 12:50:22,836 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,841 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,841 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,842 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,850 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,851 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:50:22,878 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:50:22,894 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,895 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,897 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,927 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,927 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,940 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/sv-benchmarks/c/product-lines/email_spec9_product35.cil.c[46615,46628] [2022-12-14 12:50:22,943 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,945 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,946 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,947 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,965 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,967 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:50:22,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:50:23,006 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:50:23,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23 WrapperNode [2022-12-14 12:50:23,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:50:23,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:50:23,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:50:23,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:50:23,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,078 INFO L138 Inliner]: procedures = 138, calls = 252, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1162 [2022-12-14 12:50:23,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:50:23,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:50:23,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:50:23,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:50:23,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:50:23,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:50:23,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:50:23,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:50:23,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (1/1) ... [2022-12-14 12:50:23,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:50:23,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:50:23,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:50:23,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:50:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 12:50:23,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 12:50:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 12:50:23,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 12:50:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 12:50:23,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 12:50:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 12:50:23,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 12:50:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 12:50:23,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 12:50:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 12:50:23,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 12:50:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 12:50:23,205 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 12:50:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 12:50:23,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 12:50:23,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 12:50:23,206 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 12:50:23,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 12:50:23,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 12:50:23,206 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 12:50:23,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 12:50:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 12:50:23,206 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 12:50:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 12:50:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 12:50:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 12:50:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 12:50:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 12:50:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 12:50:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 12:50:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 12:50:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 12:50:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 12:50:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 12:50:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 12:50:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 12:50:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 12:50:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 12:50:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 12:50:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:50:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:50:23,388 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:50:23,390 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:50:24,073 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:50:24,583 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:50:24,583 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:50:24,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:50:24 BoogieIcfgContainer [2022-12-14 12:50:24,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:50:24,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:50:24,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:50:24,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:50:24,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:50:22" (1/3) ... [2022-12-14 12:50:24,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5b7562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:50:24, skipping insertion in model container [2022-12-14 12:50:24,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:50:23" (2/3) ... [2022-12-14 12:50:24,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5b7562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:50:24, skipping insertion in model container [2022-12-14 12:50:24,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:50:24" (3/3) ... [2022-12-14 12:50:24,594 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product35.cil.c [2022-12-14 12:50:24,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:50:24,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:50:24,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:50:24,651 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;@192a137f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:50:24,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:50:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-12-14 12:50:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 12:50:24,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:50:24,665 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:50:24,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:50:24,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:50:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash -598622535, now seen corresponding path program 1 times [2022-12-14 12:50:24,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:50:24,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511176502] [2022-12-14 12:50:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:50:24,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:50:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:50:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:50:24,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:50:24,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511176502] [2022-12-14 12:50:24,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511176502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:50:24,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:50:24,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:50:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493582730] [2022-12-14 12:50:24,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:50:24,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:50:24,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:50:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:50:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:50:24,916 INFO L87 Difference]: Start difference. First operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:50:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:50:25,066 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2022-12-14 12:50:25,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:50:25,068 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-12-14 12:50:25,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:50:25,077 INFO L225 Difference]: With dead ends: 392 [2022-12-14 12:50:25,077 INFO L226 Difference]: Without dead ends: 239 [2022-12-14 12:50:25,080 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 [2022-12-14 12:50:25,083 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:50:25,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:50:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-14 12:50:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-12-14 12:50:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 138 states have internal predecessors, (169), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 12:50:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2022-12-14 12:50:25,145 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 71 [2022-12-14 12:50:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:50:25,146 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2022-12-14 12:50:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:50:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2022-12-14 12:50:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 12:50:25,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:50:25,152 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:50:25,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:50:25,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:50:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:50:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1879699487, now seen corresponding path program 1 times [2022-12-14 12:50:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:50:25,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838147479] [2022-12-14 12:50:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:50:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:50:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:50:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:50:25,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:50:25,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838147479] [2022-12-14 12:50:25,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838147479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:50:25,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:50:25,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:50:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273083643] [2022-12-14 12:50:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:50:25,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:50:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:50:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:50:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:50:25,291 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:50:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:50:25,421 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2022-12-14 12:50:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:50:25,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-12-14 12:50:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:50:25,424 INFO L225 Difference]: With dead ends: 388 [2022-12-14 12:50:25,424 INFO L226 Difference]: Without dead ends: 241 [2022-12-14 12:50:25,425 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 [2022-12-14 12:50:25,426 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:50:25,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:50:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-14 12:50:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-12-14 12:50:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 12:50:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2022-12-14 12:50:25,448 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 72 [2022-12-14 12:50:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:50:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2022-12-14 12:50:25,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:50:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2022-12-14 12:50:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 12:50:25,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:50:25,451 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] [2022-12-14 12:50:25,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:50:25,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:50:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:50:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash -898287427, now seen corresponding path program 1 times [2022-12-14 12:50:25,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:50:25,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91868009] [2022-12-14 12:50:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:50:25,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:50:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:50:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:50:25,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:50:25,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91868009] [2022-12-14 12:50:25,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91868009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:50:25,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:50:25,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:50:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185761314] [2022-12-14 12:50:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:50:25,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:50:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:50:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:50:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:50:25,556 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:50:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:50:25,679 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2022-12-14 12:50:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:50:25,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-12-14 12:50:25,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:50:25,682 INFO L225 Difference]: With dead ends: 517 [2022-12-14 12:50:25,682 INFO L226 Difference]: Without dead ends: 294 [2022-12-14 12:50:25,684 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 [2022-12-14 12:50:25,685 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 59 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:50:25,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 564 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:50:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-14 12:50:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2022-12-14 12:50:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 174 states have internal predecessors, (226), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-14 12:50:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2022-12-14 12:50:25,708 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 77 [2022-12-14 12:50:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:50:25,709 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2022-12-14 12:50:25,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:50:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2022-12-14 12:50:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 12:50:25,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:50:25,712 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] [2022-12-14 12:50:25,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:50:25,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:50:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:50:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash -859555289, now seen corresponding path program 1 times [2022-12-14 12:50:25,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:50:25,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707582061] [2022-12-14 12:50:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:50:25,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:50:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:50:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:50:25,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:50:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707582061] [2022-12-14 12:50:25,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707582061] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:50:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379400694] [2022-12-14 12:50:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:50:25,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:50:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:50:25,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:50:25,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:50:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:50:26,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:50:26,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:50:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:50:26,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:50:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:50:26,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379400694] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:50:26,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1364363921] [2022-12-14 12:50:26,258 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-12-14 12:50:26,258 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:50:26,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:50:26,268 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:50:26,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:51:04,481 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 12:51:04,808 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 12:51:05,144 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:51:53,308 WARN L233 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 592 DAG size of output: 466 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:00,317 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 594 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:12,448 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 593 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:24,672 WARN L233 SmtUtils]: Spent 11.92s on a formula simplification. DAG size of input: 591 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:27,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1364363921] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:52:27,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:52:27,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 12:52:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887456268] [2022-12-14 12:52:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:52:27,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 12:52:27,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:52:27,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 12:52:27,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-12-14 12:52:27,828 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 12:52:41,227 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 595 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:46,630 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 572 DAG size of output: 437 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:52:52,282 INFO L93 Difference]: Finished difference Result 629 states and 913 transitions. [2022-12-14 12:52:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 12:52:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 78 [2022-12-14 12:52:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:52:52,286 INFO L225 Difference]: With dead ends: 629 [2022-12-14 12:52:52,286 INFO L226 Difference]: Without dead ends: 358 [2022-12-14 12:52:52,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 100.4s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-12-14 12:52:52,288 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 234 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 3912 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:52:52,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 3912 Invalid, 1874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-14 12:52:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-12-14 12:52:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 317. [2022-12-14 12:52:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 197 states have (on average 1.3451776649746192) internal successors, (265), 201 states have internal predecessors, (265), 89 states have call successors, (89), 30 states have call predecessors, (89), 30 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-14 12:52:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 442 transitions. [2022-12-14 12:52:52,400 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 442 transitions. Word has length 78 [2022-12-14 12:52:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:52:52,401 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 442 transitions. [2022-12-14 12:52:52,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 12:52:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 442 transitions. [2022-12-14 12:52:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 12:52:52,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:52:52,403 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:52:52,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:52:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:52:52,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:52:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:52:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1400536518, now seen corresponding path program 1 times [2022-12-14 12:52:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:52:52,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664045515] [2022-12-14 12:52:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:52:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 12:52:52,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:52:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664045515] [2022-12-14 12:52:52,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664045515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:52:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975207174] [2022-12-14 12:52:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:52:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:52:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:52:52,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:52:52,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:52:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:52:52,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:52:52,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 12:52:52,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:52:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 12:52:52,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975207174] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:52:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601915765] [2022-12-14 12:52:52,999 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 12:52:52,999 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:52:52,999 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:52:53,000 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:52:53,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:53:37,974 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:53:38,302 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 12:53:38,627 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:54:18,389 WARN L233 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 583 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:54:34,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [601915765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:54:34,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:54:34,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 12:54:34,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771133450] [2022-12-14 12:54:34,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:54:34,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 12:54:34,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:54:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 12:54:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-12-14 12:54:34,026 INFO L87 Difference]: Start difference. First operand 317 states and 442 transitions. Second operand has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 12:54:59,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:54:59,671 INFO L93 Difference]: Finished difference Result 684 states and 992 transitions. [2022-12-14 12:54:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 12:54:59,672 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 84 [2022-12-14 12:54:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:54:59,673 INFO L225 Difference]: With dead ends: 684 [2022-12-14 12:54:59,673 INFO L226 Difference]: Without dead ends: 413 [2022-12-14 12:54:59,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 74.4s TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 12:54:59,675 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 138 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:54:59,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 4166 Invalid, 2230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 12:54:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-12-14 12:54:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 331. [2022-12-14 12:54:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 209 states have (on average 1.3492822966507176) internal successors, (282), 213 states have internal predecessors, (282), 90 states have call successors, (90), 31 states have call predecessors, (90), 31 states have return successors, (89), 88 states have call predecessors, (89), 89 states have call successors, (89) [2022-12-14 12:54:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 461 transitions. [2022-12-14 12:54:59,811 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 461 transitions. Word has length 84 [2022-12-14 12:54:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:54:59,812 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 461 transitions. [2022-12-14 12:54:59,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 12:54:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 461 transitions. [2022-12-14 12:54:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 12:54:59,813 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:54:59,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:54:59,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 12:55:00,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:00,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:55:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash 730284026, now seen corresponding path program 1 times [2022-12-14 12:55:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:00,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008781022] [2022-12-14 12:55:00,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:00,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:55:00,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:00,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008781022] [2022-12-14 12:55:00,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008781022] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:00,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281476356] [2022-12-14 12:55:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:00,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:00,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:00,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:00,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:55:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:00,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:55:00,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:55:00,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:55:00,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281476356] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:00,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592864568] [2022-12-14 12:55:00,462 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 12:55:00,462 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:00,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:00,463 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:00,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:56:37,670 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:56:37,993 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2022-12-14 12:56:38,333 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 422 for LOIs [2022-12-14 12:56:38,639 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 220 for LOIs [2022-12-14 12:56:38,702 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 12:56:39,033 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:57:31,430 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 545 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:57:40,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1592864568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:57:40,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:57:40,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-12-14 12:57:40,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563315093] [2022-12-14 12:57:40,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:57:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 12:57:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:57:40,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 12:57:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 12:57:40,064 INFO L87 Difference]: Start difference. First operand 331 states and 461 transitions. Second operand has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-14 12:58:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:58:04,859 INFO L93 Difference]: Finished difference Result 705 states and 1024 transitions. [2022-12-14 12:58:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 12:58:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) Word has length 87 [2022-12-14 12:58:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:58:04,861 INFO L225 Difference]: With dead ends: 705 [2022-12-14 12:58:04,861 INFO L226 Difference]: Without dead ends: 434 [2022-12-14 12:58:04,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 73.8s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 12:58:04,862 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 157 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 3702 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 3719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:58:04,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 4176 Invalid, 3719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3702 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-12-14 12:58:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-12-14 12:58:05,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 367. [2022-12-14 12:58:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 239 states have (on average 1.3556485355648535) internal successors, (324), 243 states have internal predecessors, (324), 93 states have call successors, (93), 34 states have call predecessors, (93), 34 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2022-12-14 12:58:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 509 transitions. [2022-12-14 12:58:05,036 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 509 transitions. Word has length 87 [2022-12-14 12:58:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:58:05,036 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 509 transitions. [2022-12-14 12:58:05,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-14 12:58:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 509 transitions. [2022-12-14 12:58:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 12:58:05,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:58:05,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:58:05,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 12:58:05,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 12:58:05,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:58:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:58:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1003243447, now seen corresponding path program 1 times [2022-12-14 12:58:05,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:58:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757678313] [2022-12-14 12:58:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:05,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:58:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:58:05,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:58:05,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757678313] [2022-12-14 12:58:05,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757678313] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:58:05,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271960358] [2022-12-14 12:58:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:05,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:58:05,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:58:05,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:58:05,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:58:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:05,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:58:05,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:58:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:58:05,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:58:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:58:05,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271960358] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:58:05,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [568679536] [2022-12-14 12:58:05,667 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 12:58:05,667 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:58:05,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:58:05,679 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:58:05,680 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:58:55,145 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 12:58:55,854 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 271 for LOIs [2022-12-14 12:58:59,634 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-12-14 12:58:59,744 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 12:59:00,163 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 273 for LOIs [2022-12-14 12:59:03,313 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 229 for LOIs [2022-12-14 12:59:03,354 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 282 for LOIs [2022-12-14 12:59:10,281 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-12-14 12:59:10,360 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 249 for LOIs [2022-12-14 12:59:10,406 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 482 for LOIs [2022-12-14 12:59:14,254 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 257 for LOIs [2022-12-14 12:59:14,317 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:59:58,454 WARN L233 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 599 DAG size of output: 411 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:00:43,850 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 477 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:01:28,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [568679536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:01:28,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:01:28,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [4, 4, 4] total 67 [2022-12-14 13:01:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075523170] [2022-12-14 13:01:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:01:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-14 13:01:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:01:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-14 13:01:28,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4216, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 13:01:28,482 INFO L87 Difference]: Start difference. First operand 367 states and 509 transitions. Second operand has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 40 states have internal predecessors, (49), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 13:02:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:02:43,325 INFO L93 Difference]: Finished difference Result 759 states and 1089 transitions. [2022-12-14 13:02:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 13:02:43,326 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 40 states have internal predecessors, (49), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 86 [2022-12-14 13:02:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:02:43,328 INFO L225 Difference]: With dead ends: 759 [2022-12-14 13:02:43,328 INFO L226 Difference]: Without dead ends: 488 [2022-12-14 13:02:43,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 191 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 182.9s TimeCoverageRelationStatistics Valid=500, Invalid=7332, Unknown=0, NotChecked=0, Total=7832 [2022-12-14 13:02:43,330 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 249 mSDsluCounter, 6928 mSDsCounter, 0 mSdLazyCounter, 8528 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 8557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 8528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:02:43,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 7193 Invalid, 8557 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [29 Valid, 8528 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2022-12-14 13:02:43,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-12-14 13:02:43,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 423. [2022-12-14 13:02:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 279 states have (on average 1.3440860215053763) internal successors, (375), 283 states have internal predecessors, (375), 103 states have call successors, (103), 43 states have call predecessors, (103), 40 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 13:02:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 580 transitions. [2022-12-14 13:02:43,584 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 580 transitions. Word has length 86 [2022-12-14 13:02:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:02:43,584 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 580 transitions. [2022-12-14 13:02:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 40 states have internal predecessors, (49), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 13:02:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 580 transitions. [2022-12-14 13:02:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 13:02:43,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:02:43,586 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:02:43,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 13:02:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:02:43,788 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:02:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:02:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1458973869, now seen corresponding path program 1 times [2022-12-14 13:02:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:02:43,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019396725] [2022-12-14 13:02:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:02:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:02:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:02:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 13:02:43,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:02:43,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019396725] [2022-12-14 13:02:43,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019396725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:02:43,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:02:43,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:02:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747318522] [2022-12-14 13:02:43,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:02:43,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:02:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:02:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:02:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:02:43,953 INFO L87 Difference]: Start difference. First operand 423 states and 580 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:02:44,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:02:44,346 INFO L93 Difference]: Finished difference Result 613 states and 815 transitions. [2022-12-14 13:02:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:02:44,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2022-12-14 13:02:44,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:02:44,348 INFO L225 Difference]: With dead ends: 613 [2022-12-14 13:02:44,349 INFO L226 Difference]: Without dead ends: 473 [2022-12-14 13:02:44,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:02:44,350 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 146 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 428 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 [2022-12-14 13:02:44,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 428 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:02:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-12-14 13:02:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 470. [2022-12-14 13:02:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 302 states have (on average 1.3245033112582782) internal successors, (400), 309 states have internal predecessors, (400), 117 states have call successors, (117), 55 states have call predecessors, (117), 50 states have return successors, (115), 108 states have call predecessors, (115), 115 states have call successors, (115) [2022-12-14 13:02:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 632 transitions. [2022-12-14 13:02:44,609 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 632 transitions. Word has length 89 [2022-12-14 13:02:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:02:44,609 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 632 transitions. [2022-12-14 13:02:44,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:02:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 632 transitions. [2022-12-14 13:02:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-14 13:02:44,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:02:44,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:02:44,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 13:02:44,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:02:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:02:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1282668941, now seen corresponding path program 1 times [2022-12-14 13:02:44,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:02:44,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551316838] [2022-12-14 13:02:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:02:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:02:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:02:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 13:02:45,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:02:45,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551316838] [2022-12-14 13:02:45,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551316838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:02:45,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:02:45,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 13:02:45,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984697227] [2022-12-14 13:02:45,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:02:45,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 13:02:45,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:02:45,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 13:02:45,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:02:45,031 INFO L87 Difference]: Start difference. First operand 470 states and 632 transitions. Second operand has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-12-14 13:02:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:02:46,401 INFO L93 Difference]: Finished difference Result 953 states and 1262 transitions. [2022-12-14 13:02:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 13:02:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 154 [2022-12-14 13:02:46,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:02:46,407 INFO L225 Difference]: With dead ends: 953 [2022-12-14 13:02:46,407 INFO L226 Difference]: Without dead ends: 773 [2022-12-14 13:02:46,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-12-14 13:02:46,408 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 300 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:02:46,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 2536 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 13:02:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-12-14 13:02:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 766. [2022-12-14 13:02:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 476 states have (on average 1.3256302521008403) internal successors, (631), 488 states have internal predecessors, (631), 204 states have call successors, (204), 92 states have call predecessors, (204), 85 states have return successors, (199), 191 states have call predecessors, (199), 199 states have call successors, (199) [2022-12-14 13:02:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1034 transitions. [2022-12-14 13:02:46,728 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1034 transitions. Word has length 154 [2022-12-14 13:02:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:02:46,728 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1034 transitions. [2022-12-14 13:02:46,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-12-14 13:02:46,728 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1034 transitions. [2022-12-14 13:02:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-14 13:02:46,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:02:46,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:02:46,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 13:02:46,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:02:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:02:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1726721423, now seen corresponding path program 1 times [2022-12-14 13:02:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:02:46,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312306835] [2022-12-14 13:02:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:02:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:02:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:02:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:02:46,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:02:46,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312306835] [2022-12-14 13:02:46,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312306835] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:02:46,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856468058] [2022-12-14 13:02:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:02:46,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:02:46,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:02:46,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:02:46,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f004de6f-ecb8-4cc7-8208-19b625da821c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:02:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:02:47,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:02:47,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:02:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 13:02:47,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:02:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:02:47,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856468058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:02:47,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [720821765] [2022-12-14 13:02:47,265 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2022-12-14 13:02:47,265 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:02:47,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:02:47,266 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:02:47,266 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:03:29,271 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 13:03:29,601 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 271 for LOIs [2022-12-14 13:03:32,561 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 13:03:32,607 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 13:03:32,925 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 548 for LOIs [2022-12-14 13:03:43,825 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 258 for LOIs [2022-12-14 13:04:00,299 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 216 for LOIs [2022-12-14 13:04:01,075 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 392 for LOIs [2022-12-14 13:04:01,308 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 220 for LOIs [2022-12-14 13:04:01,366 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 397 for LOIs [2022-12-14 13:04:01,873 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 220 for LOIs [2022-12-14 13:04:01,910 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 216 for LOIs [2022-12-14 13:04:01,942 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 216 for LOIs [2022-12-14 13:04:01,980 INFO L180 IcfgInterpreter]: Interpretation finished