./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/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_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/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_9211f8ec-e8d9-4eba-bb28-75a4a711389a/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 7a4e3d1ef75cde0243f57ce4bcedb5827704adb835017a69deaa6c50c3201720 --- 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 11:41:59,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:41:59,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:41:59,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:41:59,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:41:59,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:41:59,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:41:59,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:41:59,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:41:59,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:41:59,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:41:59,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:41:59,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:41:59,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:41:59,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:41:59,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:41:59,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:41:59,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:41:59,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:41:59,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:41:59,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:41:59,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:41:59,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:41:59,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:41:59,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:41:59,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:41:59,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:41:59,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:41:59,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:41:59,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:41:59,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:41:59,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:41:59,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:41:59,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:41:59,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:41:59,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:41:59,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:41:59,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:41:59,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:41:59,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:41:59,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:41:59,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:41:59,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:41:59,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:41:59,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:41:59,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:41:59,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:41:59,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:41:59,321 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:41:59,321 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:41:59,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:41:59,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:41:59,322 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:41:59,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:41:59,322 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:41:59,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:41:59,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:41:59,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:41:59,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:41:59,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:41:59,324 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_9211f8ec-e8d9-4eba-bb28-75a4a711389a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a4e3d1ef75cde0243f57ce4bcedb5827704adb835017a69deaa6c50c3201720 [2022-12-14 11:41:59,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:41:59,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:41:59,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:41:59,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:41:59,544 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:41:59,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec7_product19.cil.c [2022-12-14 11:42:02,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:42:02,343 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:42:02,343 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/sv-benchmarks/c/product-lines/email_spec7_product19.cil.c [2022-12-14 11:42:02,358 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/data/376270c57/2152a7ba0c88482e95aa91c63be73258/FLAG5d8090d4b [2022-12-14 11:42:02,655 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/data/376270c57/2152a7ba0c88482e95aa91c63be73258 [2022-12-14 11:42:02,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:42:02,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:42:02,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:42:02,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:42:02,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:42:02,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:42:02" (1/1) ... [2022-12-14 11:42:02,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b71fdc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:02, skipping insertion in model container [2022-12-14 11:42:02,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:42:02" (1/1) ... [2022-12-14 11:42:02,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:42:02,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:42:02,958 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:02,960 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:02,967 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:02,984 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:02,985 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:02,988 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:02,992 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_9211f8ec-e8d9-4eba-bb28-75a4a711389a/sv-benchmarks/c/product-lines/email_spec7_product19.cil.c[37206,37219] [2022-12-14 11:42:03,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:42:03,043 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:42:03,079 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:03,080 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:03,083 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:03,086 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:03,087 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:03,088 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:42:03,091 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_9211f8ec-e8d9-4eba-bb28-75a4a711389a/sv-benchmarks/c/product-lines/email_spec7_product19.cil.c[37206,37219] [2022-12-14 11:42:03,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:42:03,130 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:42:03,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03 WrapperNode [2022-12-14 11:42:03,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:42:03,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:42:03,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:42:03,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:42:03,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,183 INFO L138 Inliner]: procedures = 127, calls = 196, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 990 [2022-12-14 11:42:03,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:42:03,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:42:03,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:42:03,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:42:03,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:42:03,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:42:03,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:42:03,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:42:03,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (1/1) ... [2022-12-14 11:42:03,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:42:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:42:03,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:42:03,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:42:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 11:42:03,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 11:42:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 11:42:03,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 11:42:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 11:42:03,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 11:42:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 11:42:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 11:42:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 11:42:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 11:42:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 11:42:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 11:42:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 11:42:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 11:42:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 11:42:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 11:42:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 11:42:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:42:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 11:42:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 11:42:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 11:42:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 11:42:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 11:42:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 11:42:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 11:42:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 11:42:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 11:42:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 11:42:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 11:42:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 11:42:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 11:42:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 11:42:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:42:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 11:42:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 11:42:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:42:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:42:03,431 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:42:03,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:42:03,912 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:42:04,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:42:04,152 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:42:04,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:42:04 BoogieIcfgContainer [2022-12-14 11:42:04,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:42:04,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:42:04,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:42:04,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:42:04,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:42:02" (1/3) ... [2022-12-14 11:42:04,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325c49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:42:04, skipping insertion in model container [2022-12-14 11:42:04,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:42:03" (2/3) ... [2022-12-14 11:42:04,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325c49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:42:04, skipping insertion in model container [2022-12-14 11:42:04,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:42:04" (3/3) ... [2022-12-14 11:42:04,160 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product19.cil.c [2022-12-14 11:42:04,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:42:04,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:42:04,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:42:04,215 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;@23df6bdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:42:04,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:42:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 92 states have internal predecessors, (122), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-12-14 11:42:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 11:42:04,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:42:04,230 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] [2022-12-14 11:42:04,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:42:04,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:42:04,236 INFO L85 PathProgramCache]: Analyzing trace with hash -819981624, now seen corresponding path program 1 times [2022-12-14 11:42:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:42:04,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901371591] [2022-12-14 11:42:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:42:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:42:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:42:04,455 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 11:42:04,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:42:04,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901371591] [2022-12-14 11:42:04,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901371591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:42:04,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:42:04,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:42:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239028657] [2022-12-14 11:42:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:42:04,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:42:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:42:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:42:04,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:42:04,486 INFO L87 Difference]: Start difference. First operand has 150 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 92 states have internal predecessors, (122), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 11:42:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:42:04,588 INFO L93 Difference]: Finished difference Result 217 states and 290 transitions. [2022-12-14 11:42:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:42:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 53 [2022-12-14 11:42:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:42:04,596 INFO L225 Difference]: With dead ends: 217 [2022-12-14 11:42:04,597 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 11:42:04,599 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 11:42:04,602 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:42:04,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:42:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 11:42:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-12-14 11:42:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 89 states have internal predecessors, (116), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-12-14 11:42:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2022-12-14 11:42:04,638 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 53 [2022-12-14 11:42:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:42:04,639 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2022-12-14 11:42:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 11:42:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2022-12-14 11:42:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 11:42:04,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:42:04,641 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] [2022-12-14 11:42:04,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:42:04,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:42:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:42:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1281035867, now seen corresponding path program 1 times [2022-12-14 11:42:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:42:04,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836912777] [2022-12-14 11:42:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:42:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:42:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:42:04,771 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 11:42:04,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:42:04,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836912777] [2022-12-14 11:42:04,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836912777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:42:04,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:42:04,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:42:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205181884] [2022-12-14 11:42:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:42:04,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:42:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:42:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:42:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:42:04,774 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 11:42:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:42:04,864 INFO L93 Difference]: Finished difference Result 213 states and 278 transitions. [2022-12-14 11:42:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:42:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2022-12-14 11:42:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:42:04,866 INFO L225 Difference]: With dead ends: 213 [2022-12-14 11:42:04,866 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 11:42:04,867 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 11:42:04,869 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:42:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:42:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 11:42:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-12-14 11:42:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 91 states have internal predecessors, (118), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-12-14 11:42:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2022-12-14 11:42:04,880 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 54 [2022-12-14 11:42:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:42:04,881 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2022-12-14 11:42:04,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 11:42:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2022-12-14 11:42:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 11:42:04,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:42:04,883 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] [2022-12-14 11:42:04,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:42:04,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:42:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:42:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1337187495, now seen corresponding path program 1 times [2022-12-14 11:42:04,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:42:04,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022716613] [2022-12-14 11:42:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:42:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:42:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:42:04,949 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 11:42:04,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:42:04,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022716613] [2022-12-14 11:42:04,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022716613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:42:04,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:42:04,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:42:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506980593] [2022-12-14 11:42:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:42:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:42:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:42:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:42:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:42:04,952 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 11:42:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:42:05,032 INFO L93 Difference]: Finished difference Result 328 states and 461 transitions. [2022-12-14 11:42:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:42:05,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 59 [2022-12-14 11:42:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:42:05,034 INFO L225 Difference]: With dead ends: 328 [2022-12-14 11:42:05,034 INFO L226 Difference]: Without dead ends: 197 [2022-12-14 11:42:05,035 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 11:42:05,036 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 57 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:42:05,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 359 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:42:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-12-14 11:42:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2022-12-14 11:42:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 122 states have (on average 1.401639344262295) internal successors, (171), 123 states have internal predecessors, (171), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 11:42:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 276 transitions. [2022-12-14 11:42:05,050 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 276 transitions. Word has length 59 [2022-12-14 11:42:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:42:05,050 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 276 transitions. [2022-12-14 11:42:05,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 11:42:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 276 transitions. [2022-12-14 11:42:05,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 11:42:05,052 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:42:05,052 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] [2022-12-14 11:42:05,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:42:05,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:42:05,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:42:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1922651888, now seen corresponding path program 1 times [2022-12-14 11:42:05,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:42:05,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672226078] [2022-12-14 11:42:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:42:05,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:42:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:42:05,161 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 11:42:05,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:42:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672226078] [2022-12-14 11:42:05,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672226078] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:42:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154225044] [2022-12-14 11:42:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:42:05,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:42:05,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:42:05,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:42:05,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:42:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:42:05,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:42:05,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:42:05,435 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 11:42:05,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:42:05,484 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 11:42:05,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154225044] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:42:05,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [395995036] [2022-12-14 11:42:05,504 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-12-14 11:42:05,504 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:42:05,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:42:05,513 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:42:05,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:42:26,911 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 11:42:27,198 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:42:27,491 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:43:08,702 WARN L233 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 582 DAG size of output: 453 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:43:14,401 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 570 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:43:24,328 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 572 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:43:29,908 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 570 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:43:30,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [395995036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:43:30,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:43:30,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-12-14 11:43:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916041608] [2022-12-14 11:43:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:43:30,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 11:43:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:43:30,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 11:43:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:43:30,840 INFO L87 Difference]: Start difference. First operand 192 states and 276 transitions. Second operand has 22 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 11:43:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:37,248 INFO L93 Difference]: Finished difference Result 463 states and 713 transitions. [2022-12-14 11:43:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:43:37,248 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 60 [2022-12-14 11:43:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:37,250 INFO L225 Difference]: With dead ends: 463 [2022-12-14 11:43:37,250 INFO L226 Difference]: Without dead ends: 289 [2022-12-14 11:43:37,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 63.3s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:43:37,252 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 158 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:37,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 2554 Invalid, 1838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 11:43:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-12-14 11:43:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 215. [2022-12-14 11:43:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 144 states have (on average 1.4166666666666667) internal successors, (204), 145 states have internal predecessors, (204), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 11:43:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 309 transitions. [2022-12-14 11:43:37,352 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 309 transitions. Word has length 60 [2022-12-14 11:43:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:37,353 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 309 transitions. [2022-12-14 11:43:37,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 11:43:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 309 transitions. [2022-12-14 11:43:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:43:37,354 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:37,354 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:43:37,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:43:37,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 11:43:37,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash 687389676, now seen corresponding path program 1 times [2022-12-14 11:43:37,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:37,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390579700] [2022-12-14 11:43:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:37,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:43:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:43:37,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:37,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390579700] [2022-12-14 11:43:37,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390579700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:43:37,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:43:37,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:43:37,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825867405] [2022-12-14 11:43:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:43:37,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:43:37,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:43:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:43:37,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:43:37,621 INFO L87 Difference]: Start difference. First operand 215 states and 309 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:43:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:37,855 INFO L93 Difference]: Finished difference Result 523 states and 782 transitions. [2022-12-14 11:43:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:43:37,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2022-12-14 11:43:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:37,858 INFO L225 Difference]: With dead ends: 523 [2022-12-14 11:43:37,858 INFO L226 Difference]: Without dead ends: 332 [2022-12-14 11:43:37,859 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 11:43:37,860 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 55 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:37,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 360 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:43:37,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-12-14 11:43:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 327. [2022-12-14 11:43:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 231 states have (on average 1.4718614718614718) internal successors, (340), 232 states have internal predecessors, (340), 78 states have call successors, (78), 17 states have call predecessors, (78), 17 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-12-14 11:43:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 495 transitions. [2022-12-14 11:43:37,990 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 495 transitions. Word has length 65 [2022-12-14 11:43:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:37,990 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 495 transitions. [2022-12-14 11:43:37,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:43:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 495 transitions. [2022-12-14 11:43:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 11:43:37,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:37,992 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] [2022-12-14 11:43:37,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:43:37,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:37,992 INFO L85 PathProgramCache]: Analyzing trace with hash -240716616, now seen corresponding path program 1 times [2022-12-14 11:43:37,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:37,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377895950] [2022-12-14 11:43:37,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:37,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:43:38,081 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 11:43:38,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:38,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377895950] [2022-12-14 11:43:38,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377895950] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:43:38,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087685290] [2022-12-14 11:43:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:38,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:38,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:38,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:38,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:43:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:43:38,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:43:38,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:43:38,292 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 11:43:38,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:43:38,330 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 11:43:38,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087685290] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:43:38,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [363104019] [2022-12-14 11:43:38,333 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-12-14 11:43:38,333 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:43:38,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:43:38,334 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:43:38,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:44:05,682 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 11:44:05,968 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 11:44:06,255 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-12-14 11:44:07,762 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 11:44:07,796 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-12-14 11:44:17,445 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 11:44:17,475 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-12-14 11:44:17,515 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-12-14 11:44:18,142 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:44:52,997 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:45:33,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [363104019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:45:33,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:45:33,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-12-14 11:45:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647369069] [2022-12-14 11:45:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:45:33,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 11:45:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:45:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 11:45:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2586, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 11:45:33,689 INFO L87 Difference]: Start difference. First operand 327 states and 495 transitions. Second operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 30 states have internal predecessors, (33), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 11:46:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:46:06,844 INFO L93 Difference]: Finished difference Result 790 states and 1245 transitions. [2022-12-14 11:46:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-14 11:46:06,845 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 32 states have (on average 1.03125) internal successors, (33), 30 states have internal predecessors, (33), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 66 [2022-12-14 11:46:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:46:06,847 INFO L225 Difference]: With dead ends: 790 [2022-12-14 11:46:06,847 INFO L226 Difference]: Without dead ends: 526 [2022-12-14 11:46:06,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 93.3s TimeCoverageRelationStatistics Valid=272, Invalid=3634, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 11:46:06,848 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 254 mSDsluCounter, 3984 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:46:06,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 4176 Invalid, 5360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 5330 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2022-12-14 11:46:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-12-14 11:46:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 438. [2022-12-14 11:46:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 323 states have (on average 1.5170278637770898) internal successors, (490), 327 states have internal predecessors, (490), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (91), 86 states have call predecessors, (91), 90 states have call successors, (91) [2022-12-14 11:46:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 672 transitions. [2022-12-14 11:46:07,087 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 672 transitions. Word has length 66 [2022-12-14 11:46:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:46:07,087 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 672 transitions. [2022-12-14 11:46:07,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 32 states have (on average 1.03125) internal successors, (33), 30 states have internal predecessors, (33), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 11:46:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 672 transitions. [2022-12-14 11:46:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 11:46:07,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:46:07,088 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:46:07,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:46:07,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 11:46:07,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:46:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:46:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1131126746, now seen corresponding path program 1 times [2022-12-14 11:46:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:46:07,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435856877] [2022-12-14 11:46:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:46:07,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:46:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:46:07,421 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 11:46:07,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:46:07,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435856877] [2022-12-14 11:46:07,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435856877] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:46:07,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127282066] [2022-12-14 11:46:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:46:07,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:46:07,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:46:07,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:46:07,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:46:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:46:07,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:46:07,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:46:07,606 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 11:46:07,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:46:07,637 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 11:46:07,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127282066] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:46:07,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171640425] [2022-12-14 11:46:07,640 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-12-14 11:46:07,640 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:46:07,640 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:46:07,641 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:46:07,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:47:38,128 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 11:47:38,435 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-12-14 11:47:38,704 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-12-14 11:47:38,759 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:47:39,039 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-12-14 11:47:39,302 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 230 for LOIs [2022-12-14 11:47:40,610 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-12-14 11:47:40,638 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 230 for LOIs [2022-12-14 11:47:48,611 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 222 for LOIs [2022-12-14 11:47:48,636 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 222 for LOIs [2022-12-14 11:47:48,670 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 392 for LOIs [2022-12-14 11:47:49,145 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:48:26,986 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 532 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:48:38,756 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 527 DAG size of output: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:48:49,632 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 530 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:49:16,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [171640425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:49:16,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:49:16,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 11:49:16,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686575028] [2022-12-14 11:49:16,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:49:16,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 11:49:16,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:49:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 11:49:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 11:49:16,587 INFO L87 Difference]: Start difference. First operand 438 states and 672 transitions. Second operand has 53 states, 32 states have (on average 1.03125) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 11:49:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:49:52,934 INFO L93 Difference]: Finished difference Result 906 states and 1402 transitions. [2022-12-14 11:49:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 11:49:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 32 states have (on average 1.03125) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 69 [2022-12-14 11:49:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:49:52,938 INFO L225 Difference]: With dead ends: 906 [2022-12-14 11:49:52,938 INFO L226 Difference]: Without dead ends: 642 [2022-12-14 11:49:52,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 104.7s TimeCoverageRelationStatistics Valid=267, Invalid=4289, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 11:49:52,941 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 290 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 6761 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 5169 SdHoareTripleChecker+Invalid, 6808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:49:52,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 5169 Invalid, 6808 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [47 Valid, 6761 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2022-12-14 11:49:52,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-12-14 11:49:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 479. [2022-12-14 11:49:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 356 states have (on average 1.5112359550561798) internal successors, (538), 362 states have internal predecessors, (538), 96 states have call successors, (96), 27 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 95 states have call successors, (96) [2022-12-14 11:49:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 730 transitions. [2022-12-14 11:49:53,268 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 730 transitions. Word has length 69 [2022-12-14 11:49:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:49:53,268 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 730 transitions. [2022-12-14 11:49:53,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 32 states have (on average 1.03125) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 11:49:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 730 transitions. [2022-12-14 11:49:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 11:49:53,270 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:49:53,270 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] [2022-12-14 11:49:53,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:49:53,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:49:53,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:49:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:49:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash -753209320, now seen corresponding path program 1 times [2022-12-14 11:49:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:49:53,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423537197] [2022-12-14 11:49:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:49:53,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:49:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:49:53,540 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 11:49:53,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:49:53,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423537197] [2022-12-14 11:49:53,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423537197] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:49:53,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994667072] [2022-12-14 11:49:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:49:53,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:49:53,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:49:53,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:49:53,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:49:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:49:53,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:49:53,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:49:53,721 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 11:49:53,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:49:53,760 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 11:49:53,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994667072] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:49:53,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [54676128] [2022-12-14 11:49:53,763 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-12-14 11:49:53,763 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:49:53,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:49:53,763 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:49:53,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:50:38,496 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 11:50:38,786 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:50:39,074 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 469 for LOIs [2022-12-14 11:51:06,560 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-12-14 11:51:06,836 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 467 for LOIs [2022-12-14 11:51:34,066 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 250 for LOIs [2022-12-14 11:51:34,100 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-12-14 11:51:34,138 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 239 for LOIs [2022-12-14 11:51:34,236 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:53:23,492 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 519 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:53:48,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [54676128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:53:48,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:53:48,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-12-14 11:53:48,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898325877] [2022-12-14 11:53:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:53:48,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-14 11:53:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:53:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-14 11:53:48,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2972, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 11:53:48,680 INFO L87 Difference]: Start difference. First operand 479 states and 730 transitions. Second operand has 52 states, 37 states have (on average 1.027027027027027) internal successors, (38), 35 states have internal predecessors, (38), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 11:55:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:05,341 INFO L93 Difference]: Finished difference Result 914 states and 1409 transitions. [2022-12-14 11:55:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 11:55:05,341 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 37 states have (on average 1.027027027027027) internal successors, (38), 35 states have internal predecessors, (38), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 68 [2022-12-14 11:55:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:05,343 INFO L225 Difference]: With dead ends: 914 [2022-12-14 11:55:05,343 INFO L226 Difference]: Without dead ends: 650 [2022-12-14 11:55:05,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 194.0s TimeCoverageRelationStatistics Valid=709, Invalid=5933, Unknown=0, NotChecked=0, Total=6642 [2022-12-14 11:55:05,345 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 287 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 5422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 4492 SdHoareTripleChecker+Invalid, 5444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:05,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 4492 Invalid, 5444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 5422 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2022-12-14 11:55:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-12-14 11:55:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 499. [2022-12-14 11:55:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 376 states have (on average 1.5132978723404256) internal successors, (569), 382 states have internal predecessors, (569), 96 states have call successors, (96), 27 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 95 states have call successors, (96) [2022-12-14 11:55:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 761 transitions. [2022-12-14 11:55:05,740 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 761 transitions. Word has length 68 [2022-12-14 11:55:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:05,740 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 761 transitions. [2022-12-14 11:55:05,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 37 states have (on average 1.027027027027027) internal successors, (38), 35 states have internal predecessors, (38), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 11:55:05,741 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 761 transitions. [2022-12-14 11:55:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 11:55:05,742 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:05,742 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] [2022-12-14 11:55:05,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 11:55:05,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:05,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:55:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:05,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1058884553, now seen corresponding path program 1 times [2022-12-14 11:55:05,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:05,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616782585] [2022-12-14 11:55:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:05,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 11:55:06,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:06,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616782585] [2022-12-14 11:55:06,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616782585] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:55:06,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528935106] [2022-12-14 11:55:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:06,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:06,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:06,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9211f8ec-e8d9-4eba-bb28-75a4a711389a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:55:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:06,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:55:06,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:55:06,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:55:06,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528935106] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1134311866] [2022-12-14 11:55:06,327 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-12-14 11:55:06,328 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:06,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:06,328 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:06,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:51,359 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 11:55:51,647 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 11:55:51,925 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-12-14 11:55:53,402 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 11:55:53,436 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-12-14 11:56:03,680 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 11:56:03,710 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-12-14 11:56:03,753 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-12-14 11:56:04,433 INFO L180 IcfgInterpreter]: Interpretation finished