./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V --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 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:48:40,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:48:40,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:48:41,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:48:41,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:48:41,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:48:41,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:48:41,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:48:41,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:48:41,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:48:41,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:48:41,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:48:41,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:48:41,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:48:41,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:48:41,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:48:41,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:48:41,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:48:41,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:48:41,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:48:41,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:48:41,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:48:41,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:48:41,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:48:41,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:48:41,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:48:41,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:48:41,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:48:41,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:48:41,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:48:41,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:48:41,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:48:41,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:48:41,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:48:41,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:48:41,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:48:41,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:48:41,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:48:41,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:48:41,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:48:41,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:48:41,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:48:41,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:48:41,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:48:41,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:48:41,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:48:41,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:48:41,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:48:41,194 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:48:41,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:48:41,194 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:48:41,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:48:41,195 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:48:41,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:48:41,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:48:41,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:48:41,196 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:48:41,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:48:41,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:48:41,197 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:48:41,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:48:41,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:48:41,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:48:41,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:48:41,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:48:41,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:48:41,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:48:41,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:48:41,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:48:41,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:48:41,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:48:41,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:48:41,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:48:41,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:48:41,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:48:41,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:48:41,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:48:41,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:48:41,202 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:48:41,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:48:41,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:48:41,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:48:41,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:48:41,204 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539 [2021-11-23 02:48:41,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:48:41,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:48:41,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:48:41,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:48:41,522 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:48:41,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c [2021-11-23 02:48:41,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/data/a390774b3/f6da40eed85e44e1991a44886c8177b2/FLAG4348ae4f1 [2021-11-23 02:48:42,274 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:48:42,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c [2021-11-23 02:48:42,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/data/a390774b3/f6da40eed85e44e1991a44886c8177b2/FLAG4348ae4f1 [2021-11-23 02:48:42,461 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/data/a390774b3/f6da40eed85e44e1991a44886c8177b2 [2021-11-23 02:48:42,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:48:42,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:48:42,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:48:42,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:48:42,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:48:42,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:42" (1/1) ... [2021-11-23 02:48:42,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb10205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:42, skipping insertion in model container [2021-11-23 02:48:42,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:42" (1/1) ... [2021-11-23 02:48:42,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:48:42,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:48:43,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c[51984,51997] [2021-11-23 02:48:43,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:48:43,234 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:48:43,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c[51984,51997] [2021-11-23 02:48:43,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:48:43,441 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:48:43,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43 WrapperNode [2021-11-23 02:48:43,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:48:43,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:48:43,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:48:43,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:48:43,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,546 INFO L137 Inliner]: procedures = 129, calls = 211, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1031 [2021-11-23 02:48:43,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:48:43,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:48:43,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:48:43,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:48:43,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:48:43,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:48:43,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:48:43,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:48:43,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (1/1) ... [2021-11-23 02:48:43,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:48:43,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:48:43,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:48:43,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:48:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:48:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:48:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:48:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:48:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:48:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:48:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:48:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:48:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:48:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:48:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:48:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:48:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:48:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:48:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:48:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:48:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:48:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 02:48:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 02:48:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:48:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:48:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:48:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:48:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:48:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:48:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:48:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:48:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:48:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:48:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:48:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:48:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:48:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:48:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:48:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:48:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:48:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:48:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:48:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:48:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:48:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:48:43,920 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:48:43,922 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:48:44,776 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:48:45,166 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:48:45,166 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:48:45,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:48:45 BoogieIcfgContainer [2021-11-23 02:48:45,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:48:45,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:48:45,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:48:45,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:48:45,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:48:42" (1/3) ... [2021-11-23 02:48:45,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de0b207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:48:45, skipping insertion in model container [2021-11-23 02:48:45,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:43" (2/3) ... [2021-11-23 02:48:45,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de0b207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:48:45, skipping insertion in model container [2021-11-23 02:48:45,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:48:45" (3/3) ... [2021-11-23 02:48:45,181 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product22.cil.c [2021-11-23 02:48:45,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:48:45,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:48:45,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:48:45,279 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:48:45,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:48:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 100 states have (on average 1.35) internal successors, (135), 104 states have internal predecessors, (135), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 02:48:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 02:48:45,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:45,347 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:45,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:48:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1868417871, now seen corresponding path program 1 times [2021-11-23 02:48:45,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:45,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674659525] [2021-11-23 02:48:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:45,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:48:45,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:45,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674659525] [2021-11-23 02:48:45,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674659525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:45,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:45,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:48:45,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753830620] [2021-11-23 02:48:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:45,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:48:45,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:45,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:48:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:48:45,909 INFO L87 Difference]: Start difference. First operand has 170 states, 100 states have (on average 1.35) internal successors, (135), 104 states have internal predecessors, (135), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-23 02:48:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:46,122 INFO L93 Difference]: Finished difference Result 257 states and 348 transitions. [2021-11-23 02:48:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:48:46,126 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 56 [2021-11-23 02:48:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:46,140 INFO L225 Difference]: With dead ends: 257 [2021-11-23 02:48:46,141 INFO L226 Difference]: Without dead ends: 167 [2021-11-23 02:48:46,147 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:46,151 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:46,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:48:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-23 02:48:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-23 02:48:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 98 states have (on average 1.316326530612245) internal successors, (129), 101 states have internal predecessors, (129), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 02:48:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2021-11-23 02:48:46,282 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 56 [2021-11-23 02:48:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:46,285 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2021-11-23 02:48:46,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-23 02:48:46,286 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2021-11-23 02:48:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 02:48:46,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:46,303 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:46,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:48:46,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:48:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash -71879972, now seen corresponding path program 1 times [2021-11-23 02:48:46,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:46,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469845706] [2021-11-23 02:48:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:46,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:48:46,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:46,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469845706] [2021-11-23 02:48:46,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469845706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:46,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:46,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:48:46,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401957945] [2021-11-23 02:48:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:46,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:48:46,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:48:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:48:46,602 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-23 02:48:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:46,794 INFO L93 Difference]: Finished difference Result 253 states and 336 transitions. [2021-11-23 02:48:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:48:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 57 [2021-11-23 02:48:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:46,810 INFO L225 Difference]: With dead ends: 253 [2021-11-23 02:48:46,810 INFO L226 Difference]: Without dead ends: 169 [2021-11-23 02:48:46,819 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:46,820 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:46,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:48:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-23 02:48:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-11-23 02:48:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 100 states have (on average 1.31) internal successors, (131), 103 states have internal predecessors, (131), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 02:48:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 230 transitions. [2021-11-23 02:48:46,875 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 230 transitions. Word has length 57 [2021-11-23 02:48:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:46,876 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 230 transitions. [2021-11-23 02:48:46,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-23 02:48:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 230 transitions. [2021-11-23 02:48:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:48:46,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:46,888 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:48:46,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:48:46,889 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:48:46,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1715299896, now seen corresponding path program 1 times [2021-11-23 02:48:46,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:46,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584769002] [2021-11-23 02:48:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:46,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:48:47,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:47,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584769002] [2021-11-23 02:48:47,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584769002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:47,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:47,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:48:47,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478749056] [2021-11-23 02:48:47,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:47,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:48:47,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:48:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:48:47,066 INFO L87 Difference]: Start difference. First operand 169 states and 230 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (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) [2021-11-23 02:48:47,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:47,239 INFO L93 Difference]: Finished difference Result 368 states and 519 transitions. [2021-11-23 02:48:47,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:48:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (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 62 [2021-11-23 02:48:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:47,246 INFO L225 Difference]: With dead ends: 368 [2021-11-23 02:48:47,246 INFO L226 Difference]: Without dead ends: 217 [2021-11-23 02:48:47,250 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:47,258 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 57 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:47,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 401 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:48:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-23 02:48:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 212. [2021-11-23 02:48:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 132 states have (on average 1.393939393939394) internal successors, (184), 135 states have internal predecessors, (184), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-23 02:48:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 305 transitions. [2021-11-23 02:48:47,294 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 305 transitions. Word has length 62 [2021-11-23 02:48:47,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:47,294 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 305 transitions. [2021-11-23 02:48:47,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (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) [2021-11-23 02:48:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 305 transitions. [2021-11-23 02:48:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 02:48:47,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:47,298 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:48:47,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:48:47,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:48:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1814724603, now seen corresponding path program 1 times [2021-11-23 02:48:47,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:47,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100720725] [2021-11-23 02:48:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:47,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:48:47,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:47,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100720725] [2021-11-23 02:48:47,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100720725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:48:47,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026255367] [2021-11-23 02:48:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:47,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:48:47,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:48:47,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:48:47,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:48:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:47,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:48:47,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:48:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:48:48,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:48:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:48:48,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026255367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:48:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1468960829] [2021-11-23 02:48:48,307 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2021-11-23 02:48:48,307 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:48:48,314 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:48:48,322 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:48:48,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:49:17,550 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:49:17,821 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:49:18,113 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2021-11-23 02:49:20,318 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2021-11-23 02:49:20,367 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 260 for LOIs [2021-11-23 02:49:25,247 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 230 for LOIs [2021-11-23 02:49:25,296 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2021-11-23 02:49:26,993 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:49:40,410 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:45,720 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:52,780 WARN L227 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:59,232 WARN L227 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 472 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:25,618 WARN L227 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:49,851 WARN L227 SmtUtils]: Spent 22.63s on a formula simplification. DAG size of input: 595 DAG size of output: 467 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:08,557 WARN L227 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 472 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:33,996 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 479 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:39,830 WARN L227 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 549 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:46,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1468960829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:46,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:51:46,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2021-11-23 02:51:46,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016491415] [2021-11-23 02:51:46,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:46,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-23 02:51:46,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:46,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-23 02:51:46,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1949, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 02:51:46,105 INFO L87 Difference]: Start difference. First operand 212 states and 305 transitions. Second operand has 41 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 26 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 02:51:58,882 WARN L227 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 482 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:04,605 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 506 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:10,288 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 512 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:21,096 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 514 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:31,431 WARN L227 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 591 DAG size of output: 413 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:41,817 WARN L227 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 593 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:06,434 INFO L93 Difference]: Finished difference Result 588 states and 926 transitions. [2021-11-23 02:53:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 02:53:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 26 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 63 [2021-11-23 02:53:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:06,441 INFO L225 Difference]: With dead ends: 588 [2021-11-23 02:53:06,441 INFO L226 Difference]: Without dead ends: 394 [2021-11-23 02:53:06,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 200.5s TimeCoverageRelationStatistics Valid=197, Invalid=2883, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 02:53:06,446 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 279 mSDsluCounter, 5194 mSDsCounter, 0 mSdLazyCounter, 5741 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 5295 SdHoareTripleChecker+Invalid, 5781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 5741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:06,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 5295 Invalid, 5781 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [40 Valid, 5741 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2021-11-23 02:53:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-23 02:53:06,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 298. [2021-11-23 02:53:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 208 states have (on average 1.4567307692307692) internal successors, (303), 211 states have internal predecessors, (303), 67 states have call successors, (67), 24 states have call predecessors, (67), 22 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-23 02:53:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 436 transitions. [2021-11-23 02:53:06,619 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 436 transitions. Word has length 63 [2021-11-23 02:53:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:06,621 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 436 transitions. [2021-11-23 02:53:06,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 26 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 02:53:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 436 transitions. [2021-11-23 02:53:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:53:06,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:06,629 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:06,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:53:06,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:53:06,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2134450184, now seen corresponding path program 1 times [2021-11-23 02:53:06,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:06,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327526347] [2021-11-23 02:53:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:06,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:53:06,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:06,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327526347] [2021-11-23 02:53:06,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327526347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:06,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:06,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:53:06,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751199140] [2021-11-23 02:53:06,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:06,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:53:06,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:06,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:53:06,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:06,956 INFO L87 Difference]: Start difference. First operand 298 states and 436 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:53:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:07,208 INFO L93 Difference]: Finished difference Result 669 states and 1006 transitions. [2021-11-23 02:53:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:53:07,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2021-11-23 02:53:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:07,219 INFO L225 Difference]: With dead ends: 669 [2021-11-23 02:53:07,219 INFO L226 Difference]: Without dead ends: 413 [2021-11-23 02:53:07,221 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:53:07,222 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 55 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:07,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 415 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:53:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-23 02:53:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 406. [2021-11-23 02:53:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 291 states have (on average 1.4879725085910653) internal successors, (433), 294 states have internal predecessors, (433), 92 states have call successors, (92), 24 states have call predecessors, (92), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-23 02:53:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 616 transitions. [2021-11-23 02:53:07,397 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 616 transitions. Word has length 68 [2021-11-23 02:53:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:07,398 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 616 transitions. [2021-11-23 02:53:07,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:53:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 616 transitions. [2021-11-23 02:53:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:53:07,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:07,402 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:07,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:53:07,403 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2144767944, now seen corresponding path program 1 times [2021-11-23 02:53:07,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:07,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619205089] [2021-11-23 02:53:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:07,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:53:07,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:07,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619205089] [2021-11-23 02:53:07,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619205089] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:53:07,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885048006] [2021-11-23 02:53:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:07,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:53:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:53:07,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:53:07,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:53:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:07,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:53:07,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:53:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:53:07,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:53:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:53:08,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885048006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:53:08,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [490765187] [2021-11-23 02:53:08,192 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-11-23 02:53:08,192 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:53:08,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:53:08,193 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:53:08,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:53:41,703 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:53:42,028 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-23 02:53:42,312 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:53:54,748 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:01,265 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:08,042 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:14,118 WARN L227 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:40,799 WARN L227 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:53,452 WARN L227 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 588 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:54:59,597 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 568 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:09,727 WARN L227 SmtUtils]: Spent 9.66s on a formula simplification. DAG size of input: 570 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:17,885 WARN L227 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 572 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:26,189 WARN L227 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 568 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:33,280 WARN L227 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 570 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:39,950 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 566 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:45,965 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 564 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:55:48,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [490765187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:48,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:55:48,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2021-11-23 02:55:48,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403944897] [2021-11-23 02:55:48,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:48,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 02:55:48,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:55:48,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 02:55:48,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2021-11-23 02:55:48,715 INFO L87 Difference]: Start difference. First operand 406 states and 616 transitions. Second operand has 26 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2021-11-23 02:55:56,466 WARN L227 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 531 DAG size of output: 370 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:56:02,413 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 488 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:56:10,367 WARN L227 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 523 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:56:17,904 WARN L227 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 519 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:56:29,321 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 518 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:56:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:46,876 INFO L93 Difference]: Finished difference Result 780 states and 1217 transitions. [2021-11-23 02:56:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:56:46,877 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 69 [2021-11-23 02:56:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:46,881 INFO L225 Difference]: With dead ends: 780 [2021-11-23 02:56:46,881 INFO L226 Difference]: Without dead ends: 496 [2021-11-23 02:56:46,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 175.4s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:56:46,883 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 241 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:46,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 3458 Invalid, 2546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 2517 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 02:56:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-23 02:56:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 434. [2021-11-23 02:56:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 316 states have (on average 1.4841772151898733) internal successors, (469), 320 states have internal predecessors, (469), 94 states have call successors, (94), 25 states have call predecessors, (94), 23 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-23 02:56:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 656 transitions. [2021-11-23 02:56:47,037 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 656 transitions. Word has length 69 [2021-11-23 02:56:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:47,038 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 656 transitions. [2021-11-23 02:56:47,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2021-11-23 02:56:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 656 transitions. [2021-11-23 02:56:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:56:47,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:47,041 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:47,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:56:47,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:56:47,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:56:47,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1674038524, now seen corresponding path program 1 times [2021-11-23 02:56:47,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:56:47,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544696684] [2021-11-23 02:56:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:47,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:56:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:56:47,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:56:47,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544696684] [2021-11-23 02:56:47,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544696684] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:56:47,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77353088] [2021-11-23 02:56:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:47,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:47,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:47,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:47,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aa604b4-71c8-41ba-8f61-3cc3510c4a21/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:56:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:47,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:56:47,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:56:47,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:56:47,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77353088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:47,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1339143781] [2021-11-23 02:56:47,924 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 02:56:47,925 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:56:47,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:56:47,926 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:56:47,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:58:07,236 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:58:07,490 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2021-11-23 02:58:07,752 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2021-11-23 02:58:07,813 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:58:08,069 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2021-11-23 02:58:08,320 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 230 for LOIs [2021-11-23 02:58:09,798 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 210 for LOIs [2021-11-23 02:58:09,832 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 230 for LOIs [2021-11-23 02:58:13,254 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 202 for LOIs [2021-11-23 02:58:13,300 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 220 for LOIs [2021-11-23 02:58:13,401 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:58:24,883 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:58:31,606 WARN L227 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:58:38,876 WARN L227 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:58:45,880 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 472 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:58:51,207 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 468 DAG size of output: 293 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:59:12,461 WARN L227 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:59:28,694 WARN L227 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 532 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:59:46,726 WARN L227 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 527 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:00:00,725 WARN L227 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 530 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)