./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f70ac21a1decd51d5f9571a5be4450629a9ca28f5aa1158e9564f33ba44bf6ef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:46:37,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:46:37,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:46:37,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:46:37,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:46:37,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:46:37,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:46:37,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:46:37,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:46:37,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:46:37,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:46:37,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:46:37,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:46:37,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:46:37,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:46:37,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:46:37,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:46:37,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:46:37,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:46:37,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:46:37,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:46:37,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:46:37,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:46:37,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:46:37,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:46:37,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:46:37,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:46:37,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:46:37,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:46:37,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:46:37,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:46:37,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:46:37,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:46:37,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:46:37,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:46:37,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:46:37,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:46:37,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:46:37,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:46:37,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:46:37,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:46:37,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:46:37,324 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:46:37,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:46:37,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:46:37,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:46:37,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:46:37,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:46:37,327 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:46:37,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:46:37,327 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:46:37,327 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:46:37,328 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:46:37,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:46:37,328 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:46:37,328 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:46:37,329 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:46:37,329 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:46:37,329 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:46:37,329 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:46:37,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:46:37,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:46:37,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:46:37,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:46:37,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:46:37,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:46:37,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:46:37,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:46:37,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:46:37,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:46:37,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:46:37,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:46:37,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:46:37,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:46:37,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:46:37,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:46:37,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:46:37,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:46:37,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:46:37,334 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:46:37,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:46:37,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:46:37,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:46:37,335 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_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70ac21a1decd51d5f9571a5be4450629a9ca28f5aa1158e9564f33ba44bf6ef [2022-11-03 02:46:37,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:46:37,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:46:37,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:46:37,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:46:37,662 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:46:37,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec7_product18.cil.c [2022-11-03 02:46:37,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/data/de8ed97d8/6abae13c5bee406aa804c005ed870775/FLAG3c4d34f7e [2022-11-03 02:46:38,476 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:46:38,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/sv-benchmarks/c/product-lines/email_spec7_product18.cil.c [2022-11-03 02:46:38,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/data/de8ed97d8/6abae13c5bee406aa804c005ed870775/FLAG3c4d34f7e [2022-11-03 02:46:38,660 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/data/de8ed97d8/6abae13c5bee406aa804c005ed870775 [2022-11-03 02:46:38,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:46:38,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:46:38,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:46:38,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:46:38,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:46:38,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:46:38" (1/1) ... [2022-11-03 02:46:38,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a417e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:38, skipping insertion in model container [2022-11-03 02:46:38,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:46:38" (1/1) ... [2022-11-03 02:46:38,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:46:38,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:46:39,317 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/sv-benchmarks/c/product-lines/email_spec7_product18.cil.c[45803,45816] [2022-11-03 02:46:39,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:46:39,432 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:46:39,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/sv-benchmarks/c/product-lines/email_spec7_product18.cil.c[45803,45816] [2022-11-03 02:46:39,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:46:39,601 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:46:39,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39 WrapperNode [2022-11-03 02:46:39,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:46:39,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:46:39,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:46:39,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:46:39,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,723 INFO L138 Inliner]: procedures = 127, calls = 196, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 900 [2022-11-03 02:46:39,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:46:39,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:46:39,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:46:39,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:46:39,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:46:39,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:46:39,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:46:39,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:46:39,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (1/1) ... [2022-11-03 02:46:39,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:46:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:46:39,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:46:39,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:46:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:46:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:46:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:46:39,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:46:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:46:39,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:46:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:46:39,876 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:46:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:46:39,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:46:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:46:39,878 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:46:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:46:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:46:39,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:46:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:46:39,879 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:46:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:46:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:46:39,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:46:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:46:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:46:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:46:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:46:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:46:39,881 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:46:39,881 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:46:39,881 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:46:39,881 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:46:39,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:46:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:46:39,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:46:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:46:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:46:39,884 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:46:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:46:39,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:46:40,141 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:46:40,143 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:46:40,906 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:46:41,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:46:41,403 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:46:41,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:46:41 BoogieIcfgContainer [2022-11-03 02:46:41,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:46:41,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:46:41,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:46:41,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:46:41,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:46:38" (1/3) ... [2022-11-03 02:46:41,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceee60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:46:41, skipping insertion in model container [2022-11-03 02:46:41,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:46:39" (2/3) ... [2022-11-03 02:46:41,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceee60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:46:41, skipping insertion in model container [2022-11-03 02:46:41,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:46:41" (3/3) ... [2022-11-03 02:46:41,418 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product18.cil.c [2022-11-03 02:46:41,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:46:41,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:46:41,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:46:41,506 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;@29491589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:46:41,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:46:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 86 states have (on average 1.372093023255814) internal successors, (118), 88 states have internal predecessors, (118), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-03 02:46:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 02:46:41,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:41,524 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] [2022-11-03 02:46:41,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1330493051, now seen corresponding path program 1 times [2022-11-03 02:46:41,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:41,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373520319] [2022-11-03 02:46:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:41,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:46:41,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:41,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373520319] [2022-11-03 02:46:41,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373520319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:41,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:41,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:46:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366283522] [2022-11-03 02:46:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:41,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:46:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:46:41,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:46:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:46:41,949 INFO L87 Difference]: Start difference. First operand has 142 states, 86 states have (on average 1.372093023255814) internal successors, (118), 88 states have internal predecessors, (118), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) 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) [2022-11-03 02:46:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:42,131 INFO L93 Difference]: Finished difference Result 201 states and 266 transitions. [2022-11-03 02:46:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:46:42,135 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 [2022-11-03 02:46:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:42,155 INFO L225 Difference]: With dead ends: 201 [2022-11-03 02:46:42,155 INFO L226 Difference]: Without dead ends: 139 [2022-11-03 02:46:42,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:46:42,166 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:42,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-03 02:46:42,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-03 02:46:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 85 states have internal predecessors, (112), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-03 02:46:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 187 transitions. [2022-11-03 02:46:42,265 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 187 transitions. Word has length 53 [2022-11-03 02:46:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:42,267 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 187 transitions. [2022-11-03 02:46:42,268 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) [2022-11-03 02:46:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 187 transitions. [2022-11-03 02:46:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 02:46:42,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:42,279 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] [2022-11-03 02:46:42,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:46:42,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:42,285 INFO L85 PathProgramCache]: Analyzing trace with hash 12060653, now seen corresponding path program 1 times [2022-11-03 02:46:42,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:42,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033097162] [2022-11-03 02:46:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:46:42,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033097162] [2022-11-03 02:46:42,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033097162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:42,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:42,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:46:42,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247450598] [2022-11-03 02:46:42,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:46:42,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:46:42,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:46:42,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:46:42,596 INFO L87 Difference]: Start difference. First operand 139 states and 187 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) [2022-11-03 02:46:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:42,751 INFO L93 Difference]: Finished difference Result 197 states and 254 transitions. [2022-11-03 02:46:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:46:42,751 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 [2022-11-03 02:46:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:42,756 INFO L225 Difference]: With dead ends: 197 [2022-11-03 02:46:42,756 INFO L226 Difference]: Without dead ends: 141 [2022-11-03 02:46:42,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:46:42,767 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:42,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-03 02:46:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-11-03 02:46:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 87 states have internal predecessors, (114), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-03 02:46:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 189 transitions. [2022-11-03 02:46:42,792 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 189 transitions. Word has length 54 [2022-11-03 02:46:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:42,793 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 189 transitions. [2022-11-03 02:46:42,793 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) [2022-11-03 02:46:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 189 transitions. [2022-11-03 02:46:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:46:42,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:42,799 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] [2022-11-03 02:46:42,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:46:42,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1939205753, now seen corresponding path program 1 times [2022-11-03 02:46:42,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:42,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115322486] [2022-11-03 02:46:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:42,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:46:42,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:42,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115322486] [2022-11-03 02:46:42,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115322486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:42,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:42,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:46:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475860861] [2022-11-03 02:46:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:42,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:46:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:46:42,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:46:42,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:46:42,973 INFO L87 Difference]: Start difference. First operand 141 states and 189 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) [2022-11-03 02:46:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:43,101 INFO L93 Difference]: Finished difference Result 312 states and 437 transitions. [2022-11-03 02:46:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:46:43,101 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 [2022-11-03 02:46:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:43,105 INFO L225 Difference]: With dead ends: 312 [2022-11-03 02:46:43,105 INFO L226 Difference]: Without dead ends: 189 [2022-11-03 02:46:43,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:46:43,116 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 57 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:43,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 337 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:43,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-03 02:46:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 184. [2022-11-03 02:46:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 118 states have (on average 1.4152542372881356) internal successors, (167), 119 states have internal predecessors, (167), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-03 02:46:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 264 transitions. [2022-11-03 02:46:43,161 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 264 transitions. Word has length 59 [2022-11-03 02:46:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:43,161 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 264 transitions. [2022-11-03 02:46:43,162 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) [2022-11-03 02:46:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 264 transitions. [2022-11-03 02:46:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 02:46:43,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:43,163 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] [2022-11-03 02:46:43,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:46:43,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -203284552, now seen corresponding path program 1 times [2022-11-03 02:46:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:43,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648123165] [2022-11-03 02:46:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:46:43,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:43,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648123165] [2022-11-03 02:46:43,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648123165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:43,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062075681] [2022-11-03 02:46:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:43,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:43,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:46:43,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:46:43,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:46:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:43,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:46:43,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:46:43,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:46:43,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062075681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:43,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [887402329] [2022-11-03 02:46:43,899 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-11-03 02:46:43,899 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:46:43,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:46:43,909 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:46:43,909 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:47:15,044 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:47:15,359 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:47:15,703 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 257 for LOIs [2022-11-03 02:47:17,707 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-03 02:47:17,751 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-03 02:47:29,511 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 249 for LOIs [2022-11-03 02:47:29,547 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 249 for LOIs [2022-11-03 02:47:29,590 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-11-03 02:47:30,320 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:48:11,785 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 504 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:20,407 WARN L234 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 514 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:26,306 WARN L234 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 567 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:35,755 WARN L234 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 569 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:43,249 WARN L234 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 569 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:50,935 WARN L234 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 567 DAG size of output: 379 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:01,989 WARN L234 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 444 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:08,772 WARN L234 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 459 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:47,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [887402329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:47,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:49:47,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-03 02:49:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128709925] [2022-11-03 02:49:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-03 02:49:47,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-03 02:49:47,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2123, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 02:49:47,018 INFO L87 Difference]: Start difference. First operand 184 states and 264 transitions. Second operand has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 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) [2022-11-03 02:50:00,431 WARN L234 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 460 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:38,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:38,170 INFO L93 Difference]: Finished difference Result 548 states and 860 transitions. [2022-11-03 02:50:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-03 02:50:38,171 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 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 60 [2022-11-03 02:50:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:38,176 INFO L225 Difference]: With dead ends: 548 [2022-11-03 02:50:38,177 INFO L226 Difference]: Without dead ends: 382 [2022-11-03 02:50:38,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 167.2s TimeCoverageRelationStatistics Valid=180, Invalid=2682, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 02:50:38,180 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 362 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 4561 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 4607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:38,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 3604 Invalid, 4607 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [46 Valid, 4561 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2022-11-03 02:50:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-03 02:50:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 286. [2022-11-03 02:50:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 204 states have (on average 1.4705882352941178) internal successors, (300), 206 states have internal predecessors, (300), 59 states have call successors, (59), 23 states have call predecessors, (59), 22 states have return successors, (59), 56 states have call predecessors, (59), 58 states have call successors, (59) [2022-11-03 02:50:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 418 transitions. [2022-11-03 02:50:38,445 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 418 transitions. Word has length 60 [2022-11-03 02:50:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:38,445 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 418 transitions. [2022-11-03 02:50:38,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 26 states have internal predecessors, (30), 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) [2022-11-03 02:50:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 418 transitions. [2022-11-03 02:50:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:50:38,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:38,448 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] [2022-11-03 02:50:38,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:50:38,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:38,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash 993671672, now seen corresponding path program 1 times [2022-11-03 02:50:38,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:38,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397996221] [2022-11-03 02:50:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:38,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:50:38,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:38,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397996221] [2022-11-03 02:50:38,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397996221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:38,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:38,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:38,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647357254] [2022-11-03 02:50:38,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:38,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:38,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:38,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:38,817 INFO L87 Difference]: Start difference. First operand 286 states and 418 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) [2022-11-03 02:50:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:39,208 INFO L93 Difference]: Finished difference Result 645 states and 970 transitions. [2022-11-03 02:50:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:39,208 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 [2022-11-03 02:50:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:39,212 INFO L225 Difference]: With dead ends: 645 [2022-11-03 02:50:39,212 INFO L226 Difference]: Without dead ends: 401 [2022-11-03 02:50:39,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:39,214 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 55 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:39,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 347 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:50:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-03 02:50:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 394. [2022-11-03 02:50:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 287 states have (on average 1.4982578397212543) internal successors, (430), 289 states have internal predecessors, (430), 84 states have call successors, (84), 23 states have call predecessors, (84), 22 states have return successors, (84), 81 states have call predecessors, (84), 83 states have call successors, (84) [2022-11-03 02:50:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 598 transitions. [2022-11-03 02:50:39,463 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 598 transitions. Word has length 65 [2022-11-03 02:50:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:39,464 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 598 transitions. [2022-11-03 02:50:39,464 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) [2022-11-03 02:50:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 598 transitions. [2022-11-03 02:50:39,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:50:39,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:39,466 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] [2022-11-03 02:50:39,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:50:39,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash 933656748, now seen corresponding path program 1 times [2022-11-03 02:50:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:39,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207655989] [2022-11-03 02:50:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:39,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:50:39,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:39,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207655989] [2022-11-03 02:50:39,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207655989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:39,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480406894] [2022-11-03 02:50:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:39,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:39,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:39,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:39,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:50:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:39,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:50:39,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:50:39,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:50:40,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480406894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:40,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [384061544] [2022-11-03 02:50:40,065 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-03 02:50:40,065 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:50:40,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:50:40,066 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:50:40,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:51:12,355 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:51:12,680 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 02:51:12,978 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-11-03 02:51:14,585 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-11-03 02:51:14,625 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2022-11-03 02:51:26,138 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-11-03 02:51:26,176 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-11-03 02:51:26,219 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-03 02:51:26,931 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:51:40,096 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:46,371 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:16,022 WARN L234 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 504 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:25,130 WARN L234 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 514 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:48,325 WARN L234 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 448 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:55,345 WARN L234 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 463 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:24,674 WARN L234 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 566 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [384061544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:37,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:53:37,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [4, 4, 4] total 52 [2022-11-03 02:53:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899319744] [2022-11-03 02:53:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:37,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-03 02:53:37,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-03 02:53:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2485, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 02:53:37,393 INFO L87 Difference]: Start difference. First operand 394 states and 598 transitions. Second operand has 47 states, 31 states have (on average 1.064516129032258) internal successors, (33), 29 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) [2022-11-03 02:53:55,565 WARN L234 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 467 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:00,958 WARN L234 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 465 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:42,709 INFO L93 Difference]: Finished difference Result 819 states and 1260 transitions. [2022-11-03 02:54:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 02:54:42,709 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 31 states have (on average 1.064516129032258) internal successors, (33), 29 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 [2022-11-03 02:54:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:42,713 INFO L225 Difference]: With dead ends: 819 [2022-11-03 02:54:42,714 INFO L226 Difference]: Without dead ends: 563 [2022-11-03 02:54:42,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 173.9s TimeCoverageRelationStatistics Valid=264, Invalid=3396, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 02:54:42,717 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 336 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 5100 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 5147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:42,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 4191 Invalid, 5147 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [47 Valid, 5100 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2022-11-03 02:54:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-03 02:54:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 407. [2022-11-03 02:54:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 297 states have (on average 1.4983164983164983) internal successors, (445), 300 states have internal predecessors, (445), 86 states have call successors, (86), 24 states have call predecessors, (86), 23 states have return successors, (86), 82 states have call predecessors, (86), 85 states have call successors, (86) [2022-11-03 02:54:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 617 transitions. [2022-11-03 02:54:43,015 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 617 transitions. Word has length 66 [2022-11-03 02:54:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:43,016 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 617 transitions. [2022-11-03 02:54:43,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 31 states have (on average 1.064516129032258) internal successors, (33), 29 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) [2022-11-03 02:54:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 617 transitions. [2022-11-03 02:54:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:54:43,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:43,019 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:43,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:43,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:43,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1435115605, now seen corresponding path program 1 times [2022-11-03 02:54:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:43,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585543069] [2022-11-03 02:54:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:54:43,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:43,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585543069] [2022-11-03 02:54:43,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585543069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:43,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702417962] [2022-11-03 02:54:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:43,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:43,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:43,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:43,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:54:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:43,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:43,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:54:43,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:54:43,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702417962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:43,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [309361603] [2022-11-03 02:54:43,858 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-03 02:54:43,859 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:54:43,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:54:43,860 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:54:43,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:55:18,791 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:55:19,124 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 229 for LOIs [2022-11-03 02:55:19,191 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-03 02:55:19,256 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:55:19,571 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 228 for LOIs [2022-11-03 02:55:19,644 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 230 for LOIs [2022-11-03 02:55:21,058 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-11-03 02:55:21,092 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 230 for LOIs [2022-11-03 02:55:38,850 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 382 for LOIs [2022-11-03 02:55:39,037 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 222 for LOIs [2022-11-03 02:55:39,074 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 392 for LOIs [2022-11-03 02:55:39,618 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:55:52,784 WARN L234 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:58,824 WARN L234 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:26,107 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 504 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:35,153 WARN L234 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 514 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:22,010 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 514 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:28,503 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 536 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:42,065 WARN L234 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 562 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:47,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [309361603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:57:47,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:57:47,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-03 02:57:47,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673510121] [2022-11-03 02:57:47,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:57:47,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-03 02:57:47,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:57:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-03 02:57:47,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3037, Unknown=0, NotChecked=0, Total=3192 [2022-11-03 02:57:47,681 INFO L87 Difference]: Start difference. First operand 407 states and 617 transitions. Second operand has 52 states, 31 states have (on average 1.064516129032258) internal successors, (33), 29 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) [2022-11-03 02:58:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:44,707 INFO L93 Difference]: Finished difference Result 847 states and 1302 transitions. [2022-11-03 02:58:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-03 02:58:44,708 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 31 states have (on average 1.064516129032258) internal successors, (33), 29 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 [2022-11-03 02:58:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:44,712 INFO L225 Difference]: With dead ends: 847 [2022-11-03 02:58:44,712 INFO L226 Difference]: Without dead ends: 591 [2022-11-03 02:58:44,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 157.5s TimeCoverageRelationStatistics Valid=227, Invalid=4063, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 02:58:44,715 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 280 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 7284 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 5109 SdHoareTripleChecker+Invalid, 7325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 7284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:44,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 5109 Invalid, 7325 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [41 Valid, 7284 Invalid, 0 Unknown, 0 Unchecked, 26.5s Time] [2022-11-03 02:58:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-03 02:58:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 445. [2022-11-03 02:58:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 328 states have (on average 1.4939024390243902) internal successors, (490), 332 states have internal predecessors, (490), 90 states have call successors, (90), 27 states have call predecessors, (90), 26 states have return successors, (90), 85 states have call predecessors, (90), 89 states have call successors, (90) [2022-11-03 02:58:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 670 transitions. [2022-11-03 02:58:45,081 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 670 transitions. Word has length 69 [2022-11-03 02:58:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:45,081 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 670 transitions. [2022-11-03 02:58:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 31 states have (on average 1.064516129032258) internal successors, (33), 29 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) [2022-11-03 02:58:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 670 transitions. [2022-11-03 02:58:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:58:45,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:45,084 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] [2022-11-03 02:58:45,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:45,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:58:45,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1719016115, now seen corresponding path program 1 times [2022-11-03 02:58:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:58:45,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438730679] [2022-11-03 02:58:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:58:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:58:45,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:58:45,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438730679] [2022-11-03 02:58:45,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438730679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:58:45,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180273023] [2022-11-03 02:58:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:45,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:58:45,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:58:45,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:58:45,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e269ed-fd1d-410d-94cd-eaef5db6d94f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:58:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:45,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:58:45,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:58:45,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:58:45,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180273023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:45,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1241953693] [2022-11-03 02:58:45,981 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-03 02:58:45,981 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:58:45,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:58:45,982 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:58:45,982 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs