./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS --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 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb --- 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-8393723 [2022-11-19 06:58:34,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:58:34,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:58:34,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:58:34,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:58:34,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:58:34,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:58:34,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:58:34,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:58:34,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:58:34,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:58:34,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:58:34,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:58:34,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:58:34,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:58:34,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:58:34,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:58:34,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:58:34,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:58:34,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:58:34,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:58:34,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:58:34,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:58:34,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:58:34,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:58:34,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:58:34,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:58:34,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:58:34,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:58:34,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:58:34,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:58:34,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:58:34,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:58:34,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:58:34,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:58:34,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:58:34,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:58:34,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:58:34,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:58:34,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:58:34,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:58:34,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:58:34,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:58:34,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:58:34,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:58:34,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:58:34,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:58:34,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:58:34,247 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:58:34,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:58:34,248 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:58:34,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:58:34,248 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:58:34,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:58:34,249 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:58:34,249 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:58:34,249 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:58:34,249 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:58:34,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:58:34,250 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:58:34,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:58:34,251 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:58:34,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:58:34,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:58:34,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:58:34,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:58:34,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:58:34,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:58:34,252 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:58:34,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:58:34,253 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:58:34,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:58:34,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:58:34,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:58:34,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:34,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:58:34,254 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:58:34,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:58:34,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:58:34,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:58:34,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:58:34,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:58:34,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:58:34,256 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_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb [2022-11-19 06:58:34,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:58:34,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:58:34,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:58:34,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:58:34,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:58:34,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2022-11-19 06:58:34,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/data/6902d3ad0/01a955c9b0624124995681fcf8d7d2fc/FLAGeaceaf3b1 [2022-11-19 06:58:35,308 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:58:35,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2022-11-19 06:58:35,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/data/6902d3ad0/01a955c9b0624124995681fcf8d7d2fc/FLAGeaceaf3b1 [2022-11-19 06:58:35,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/data/6902d3ad0/01a955c9b0624124995681fcf8d7d2fc [2022-11-19 06:58:35,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:58:35,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:58:35,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:35,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:58:35,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:58:35,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:35" (1/1) ... [2022-11-19 06:58:35,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69df2480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:35, skipping insertion in model container [2022-11-19 06:58:35,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:35" (1/1) ... [2022-11-19 06:58:35,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:58:35,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:58:36,092 WARN L234 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_5e8976bd-e692-443b-9385-3591919a85fa/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2022-11-19 06:58:36,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:36,181 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:58:36,245 WARN L234 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_5e8976bd-e692-443b-9385-3591919a85fa/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2022-11-19 06:58:36,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:36,299 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:58:36,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36 WrapperNode [2022-11-19 06:58:36,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:36,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:36,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:58:36,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:58:36,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,421 INFO L138 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 832 [2022-11-19 06:58:36,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:36,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:58:36,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:58:36,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:58:36,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:58:36,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:58:36,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:58:36,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:58:36,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (1/1) ... [2022-11-19 06:58:36,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:36,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:36,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:58:36,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:58:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 06:58:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 06:58:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 06:58:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 06:58:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 06:58:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 06:58:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 06:58:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 06:58:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 06:58:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 06:58:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 06:58:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 06:58:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 06:58:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 06:58:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 06:58:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 06:58:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 06:58:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:58:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 06:58:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 06:58:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 06:58:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 06:58:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 06:58:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 06:58:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 06:58:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 06:58:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 06:58:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 06:58:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 06:58:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 06:58:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:58:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 06:58:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 06:58:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:58:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:58:36,866 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:58:36,869 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:58:37,623 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:58:38,064 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:58:38,065 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:58:38,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:38 BoogieIcfgContainer [2022-11-19 06:58:38,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:58:38,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:58:38,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:58:38,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:58:38,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:58:35" (1/3) ... [2022-11-19 06:58:38,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713553e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:38, skipping insertion in model container [2022-11-19 06:58:38,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:36" (2/3) ... [2022-11-19 06:58:38,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713553e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:38, skipping insertion in model container [2022-11-19 06:58:38,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:38" (3/3) ... [2022-11-19 06:58:38,082 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product37.cil.c [2022-11-19 06:58:38,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:58:38,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:58:38,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:58:38,191 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;@6dc001b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:58:38,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:58:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-19 06:58:38,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 06:58:38,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:38,221 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] [2022-11-19 06:58:38,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash -284632055, now seen corresponding path program 1 times [2022-11-19 06:58:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:38,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642265761] [2022-11-19 06:58:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:38,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:38,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642265761] [2022-11-19 06:58:38,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642265761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:38,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:38,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:58:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338606907] [2022-11-19 06:58:38,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:58:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:58:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:58:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:58:38,733 INFO L87 Difference]: Start difference. First operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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) [2022-11-19 06:58:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:38,884 INFO L93 Difference]: Finished difference Result 199 states and 266 transitions. [2022-11-19 06:58:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:58:38,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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 [2022-11-19 06:58:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:38,905 INFO L225 Difference]: With dead ends: 199 [2022-11-19 06:58:38,905 INFO L226 Difference]: Without dead ends: 138 [2022-11-19 06:58:38,910 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 [2022-11-19 06:58:38,914 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 [2022-11-19 06:58:38,915 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] [2022-11-19 06:58:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-19 06:58:38,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-19 06:58:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 83 states have internal predecessors, (108), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-19 06:58:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2022-11-19 06:58:38,970 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 54 [2022-11-19 06:58:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:38,971 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2022-11-19 06:58:38,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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) [2022-11-19 06:58:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2022-11-19 06:58:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 06:58:38,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:38,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:38,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:58:38,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:38,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1022432279, now seen corresponding path program 1 times [2022-11-19 06:58:38,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:38,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102731440] [2022-11-19 06:58:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:38,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:39,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:39,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102731440] [2022-11-19 06:58:39,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102731440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:39,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:39,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:58:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561686932] [2022-11-19 06:58:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:58:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:39,219 INFO L87 Difference]: Start difference. First operand 138 states and 187 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-11-19 06:58:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:39,313 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2022-11-19 06:58:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:39,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 55 [2022-11-19 06:58:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:39,316 INFO L225 Difference]: With dead ends: 195 [2022-11-19 06:58:39,316 INFO L226 Difference]: Without dead ends: 140 [2022-11-19 06:58:39,317 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 [2022-11-19 06:58:39,318 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 160 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 [2022-11-19 06:58:39,319 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] [2022-11-19 06:58:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-19 06:58:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-19 06:58:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 85 states have internal predecessors, (110), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-19 06:58:39,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 189 transitions. [2022-11-19 06:58:39,334 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 189 transitions. Word has length 55 [2022-11-19 06:58:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:39,334 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 189 transitions. [2022-11-19 06:58:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-11-19 06:58:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 189 transitions. [2022-11-19 06:58:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 06:58:39,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:39,337 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] [2022-11-19 06:58:39,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:58:39,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:39,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1013588921, now seen corresponding path program 1 times [2022-11-19 06:58:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:39,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192845966] [2022-11-19 06:58:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:39,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:39,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192845966] [2022-11-19 06:58:39,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192845966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:39,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:39,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:58:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121134036] [2022-11-19 06:58:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:58:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:39,451 INFO L87 Difference]: Start difference. First operand 140 states and 189 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-11-19 06:58:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:39,548 INFO L93 Difference]: Finished difference Result 310 states and 437 transitions. [2022-11-19 06:58:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:39,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 60 [2022-11-19 06:58:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:39,551 INFO L225 Difference]: With dead ends: 310 [2022-11-19 06:58:39,551 INFO L226 Difference]: Without dead ends: 188 [2022-11-19 06:58:39,553 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 [2022-11-19 06:58:39,554 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 57 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 334 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 [2022-11-19 06:58:39,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 334 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:58:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-19 06:58:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2022-11-19 06:58:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 117 states have internal predecessors, (163), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 06:58:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2022-11-19 06:58:39,575 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 60 [2022-11-19 06:58:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:39,576 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2022-11-19 06:58:39,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-11-19 06:58:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2022-11-19 06:58:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 06:58:39,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:39,579 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] [2022-11-19 06:58:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:58:39,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash -282689252, now seen corresponding path program 1 times [2022-11-19 06:58:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:39,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456855340] [2022-11-19 06:58:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:39,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:39,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:39,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456855340] [2022-11-19 06:58:39,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456855340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:58:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430553474] [2022-11-19 06:58:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:39,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:39,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:58:39,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:58:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:58:40,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:40,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:40,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430553474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:40,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078084319] [2022-11-19 06:58:40,378 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-19 06:58:40,379 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:58:40,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:58:40,391 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:58:40,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:59:27,356 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 06:59:27,762 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 06:59:28,065 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:59:57,524 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:13,666 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 504 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:22,482 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 514 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:44,029 WARN L233 SmtUtils]: Spent 21.21s on a formula simplification. DAG size of input: 592 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:05,483 WARN L233 SmtUtils]: Spent 21.10s on a formula simplification. DAG size of input: 594 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:13,665 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 568 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:18,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2078084319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:18,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:01:18,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-19 07:01:18,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963316657] [2022-11-19 07:01:18,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:18,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:01:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:01:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:01:18,242 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-19 07:01:31,041 WARN L233 SmtUtils]: Spent 11.14s on a formula simplification. DAG size of input: 505 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:42,225 WARN L233 SmtUtils]: Spent 10.92s on a formula simplification. DAG size of input: 505 DAG size of output: 419 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:54,801 WARN L233 SmtUtils]: Spent 12.29s on a formula simplification. DAG size of input: 591 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:06,997 WARN L233 SmtUtils]: Spent 11.85s on a formula simplification. DAG size of input: 559 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:18,155 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 560 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:34,184 WARN L233 SmtUtils]: Spent 15.56s on a formula simplification. DAG size of input: 559 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:40,935 INFO L93 Difference]: Finished difference Result 449 states and 696 transitions. [2022-11-19 07:02:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 07:02:40,936 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 61 [2022-11-19 07:02:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:40,940 INFO L225 Difference]: With dead ends: 449 [2022-11-19 07:02:40,940 INFO L226 Difference]: Without dead ends: 284 [2022-11-19 07:02:40,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 183.7s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-11-19 07:02:40,942 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 150 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:40,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 2437 Invalid, 1831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-19 07:02:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-19 07:02:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 211. [2022-11-19 07:02:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 144 states have internal predecessors, (202), 51 states have call successors, (51), 16 states have call predecessors, (51), 16 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 07:02:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 303 transitions. [2022-11-19 07:02:41,102 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 303 transitions. Word has length 61 [2022-11-19 07:02:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:41,103 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 303 transitions. [2022-11-19 07:02:41,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-19 07:02:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 303 transitions. [2022-11-19 07:02:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:02:41,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:41,118 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:41,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:41,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1606006308, now seen corresponding path program 1 times [2022-11-19 07:02:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:41,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044056606] [2022-11-19 07:02:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:41,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:02:41,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044056606] [2022-11-19 07:02:41,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044056606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825067380] [2022-11-19 07:02:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:41,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:41,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:41,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:41,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:02:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:41,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:02:41,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:02:41,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:02:41,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825067380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:41,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [229160126] [2022-11-19 07:02:41,906 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-19 07:02:41,906 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:02:41,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:02:41,907 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:02:41,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:03:19,268 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:03:19,564 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-19 07:03:19,835 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 240 for LOIs [2022-11-19 07:03:21,121 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-11-19 07:03:21,160 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 242 for LOIs [2022-11-19 07:03:22,976 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 233 for LOIs [2022-11-19 07:03:23,009 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-19 07:03:24,641 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:03:42,167 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:58,733 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:14,693 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 504 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:23,394 WARN L233 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 514 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:43,937 WARN L233 SmtUtils]: Spent 20.23s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:57,004 WARN L233 SmtUtils]: Spent 12.71s on a formula simplification. DAG size of input: 593 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:02,999 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 569 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:09,268 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 569 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:25,039 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 469 DAG size of output: 242 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:52,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [229160126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:52,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:05:52,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-19 07:05:52,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031466033] [2022-11-19 07:05:52,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:52,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-19 07:05:52,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-19 07:05:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2129, Unknown=0, NotChecked=0, Total=2256 [2022-11-19 07:05:52,835 INFO L87 Difference]: Start difference. First operand 211 states and 303 transitions. Second operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 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) [2022-11-19 07:06:14,204 WARN L233 SmtUtils]: Spent 18.75s on a formula simplification. DAG size of input: 496 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:21,325 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 484 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:37,467 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 478 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:43,239 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 476 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:48,951 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 481 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:54,629 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 483 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:10,761 WARN L233 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 586 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:22,810 WARN L233 SmtUtils]: Spent 11.09s on a formula simplification. DAG size of input: 598 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:34,368 WARN L233 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 588 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:08:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:02,999 INFO L93 Difference]: Finished difference Result 528 states and 811 transitions. [2022-11-19 07:08:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-19 07:08:03,000 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 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 67 [2022-11-19 07:08:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:03,006 INFO L225 Difference]: With dead ends: 528 [2022-11-19 07:08:03,006 INFO L226 Difference]: Without dead ends: 363 [2022-11-19 07:08:03,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 257.5s TimeCoverageRelationStatistics Valid=275, Invalid=3757, Unknown=0, NotChecked=0, Total=4032 [2022-11-19 07:08:03,018 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 360 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 4613 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 4671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:03,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 3976 Invalid, 4671 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [58 Valid, 4613 Invalid, 0 Unknown, 0 Unchecked, 20.1s Time] [2022-11-19 07:08:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-19 07:08:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 299. [2022-11-19 07:08:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 218 states have (on average 1.463302752293578) internal successors, (319), 221 states have internal predecessors, (319), 59 states have call successors, (59), 22 states have call predecessors, (59), 21 states have return successors, (59), 55 states have call predecessors, (59), 58 states have call successors, (59) [2022-11-19 07:08:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 437 transitions. [2022-11-19 07:08:03,340 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 437 transitions. Word has length 67 [2022-11-19 07:08:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:03,340 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 437 transitions. [2022-11-19 07:08:03,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 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) [2022-11-19 07:08:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 437 transitions. [2022-11-19 07:08:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:08:03,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:03,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:03,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:08:03,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:03,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1044951433, now seen corresponding path program 1 times [2022-11-19 07:08:03,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:03,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077979968] [2022-11-19 07:08:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:08:03,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:03,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077979968] [2022-11-19 07:08:03,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077979968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:03,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349865736] [2022-11-19 07:08:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:03,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:03,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:03,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:03,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:08:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:04,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:08:04,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:08:04,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:08:04,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349865736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145176711] [2022-11-19 07:08:04,185 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-19 07:08:04,185 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:04,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:04,186 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:04,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:47,640 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:08:47,904 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-19 07:08:47,962 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-19 07:08:48,026 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:08:48,309 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-19 07:08:48,398 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:09:19,997 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:37,082 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 504 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:46,415 WARN L233 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 514 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:00,983 WARN L233 SmtUtils]: Spent 14.19s on a formula simplification. DAG size of input: 623 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:29,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1145176711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:29,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:10:29,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-19 07:10:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191165496] [2022-11-19 07:10:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 07:10:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 07:10:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:10:29,531 INFO L87 Difference]: Start difference. First operand 299 states and 437 transitions. Second operand has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-19 07:10:38,249 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 547 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:44,304 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 549 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:56,473 INFO L93 Difference]: Finished difference Result 583 states and 894 transitions. [2022-11-19 07:10:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 07:10:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 70 [2022-11-19 07:10:56,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:56,478 INFO L225 Difference]: With dead ends: 583 [2022-11-19 07:10:56,478 INFO L226 Difference]: Without dead ends: 418 [2022-11-19 07:10:56,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 113.9s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:10:56,480 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 201 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:56,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2999 Invalid, 2915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-19 07:10:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-19 07:10:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 366. [2022-11-19 07:10:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 278 states have (on average 1.485611510791367) internal successors, (413), 282 states have internal predecessors, (413), 63 states have call successors, (63), 25 states have call predecessors, (63), 24 states have return successors, (63), 58 states have call predecessors, (63), 62 states have call successors, (63) [2022-11-19 07:10:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 539 transitions. [2022-11-19 07:10:56,832 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 539 transitions. Word has length 70 [2022-11-19 07:10:56,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:56,833 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 539 transitions. [2022-11-19 07:10:56,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-19 07:10:56,833 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 539 transitions. [2022-11-19 07:10:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-19 07:10:56,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:56,836 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] [2022-11-19 07:10:56,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:57,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:57,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:57,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1297091536, now seen corresponding path program 1 times [2022-11-19 07:10:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:57,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180250093] [2022-11-19 07:10:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:10:57,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:57,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180250093] [2022-11-19 07:10:57,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180250093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:10:57,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482940037] [2022-11-19 07:10:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:57,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:57,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:57,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:57,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8976bd-e692-443b-9385-3591919a85fa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:10:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:57,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:10:57,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:10:57,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:10:57,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482940037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:57,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1806511297] [2022-11-19 07:10:57,651 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-19 07:10:57,651 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:10:57,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:10:57,652 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:10:57,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:11:48,469 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:11:48,810 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:11:49,119 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 247 for LOIs [2022-11-19 07:11:50,729 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 07:11:50,771 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 247 for LOIs [2022-11-19 07:11:52,688 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2022-11-19 07:11:52,725 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 470 for LOIs [2022-11-19 07:11:57,651 INFO L180 IcfgInterpreter]: Interpretation finished