./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product40.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_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/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_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/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_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/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 3d6b4da8bd47478af9a0348a2f21d8475ccd8463dda8c629c98551dc6b564226 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:41:09,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:41:09,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:41:09,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:41:09,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:41:09,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:41:09,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:41:09,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:41:09,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:41:09,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:41:09,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:41:09,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:41:09,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:41:09,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:41:09,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:41:09,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:41:09,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:41:09,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:41:09,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:41:09,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:41:09,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:41:09,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:41:09,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:41:09,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:41:09,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:41:09,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:41:09,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:41:09,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:41:09,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:41:09,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:41:09,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:41:09,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:41:09,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:41:09,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:41:09,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:41:09,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:41:09,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:41:09,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:41:09,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:41:09,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:41:09,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:41:09,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:41:09,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:41:09,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:41:09,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:41:09,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:41:09,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:41:09,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:41:09,231 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:41:09,232 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:41:09,232 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:41:09,232 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:41:09,232 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:41:09,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:41:09,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:41:09,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:41:09,233 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:41:09,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:41:09,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:41:09,234 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:41:09,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:41:09,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:41:09,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:41:09,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:41:09,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:41:09,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:41:09,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:41:09,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:41:09,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:41:09,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:41:09,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:41:09,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:41:09,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:41:09,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:41:09,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:09,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:41:09,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:41:09,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:41:09,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:41:09,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:41:09,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:41:09,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:41:09,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:41:09,240 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_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d6b4da8bd47478af9a0348a2f21d8475ccd8463dda8c629c98551dc6b564226 [2021-11-23 02:41:09,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:41:09,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:41:09,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:41:09,560 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:41:09,561 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:41:09,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product40.cil.c [2021-11-23 02:41:09,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/data/7676c4fc6/f8423649bc914d5785d01f573d94951c/FLAG01abc37b8 [2021-11-23 02:41:10,354 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:41:10,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/sv-benchmarks/c/product-lines/email_spec11_product40.cil.c [2021-11-23 02:41:10,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/data/7676c4fc6/f8423649bc914d5785d01f573d94951c/FLAG01abc37b8 [2021-11-23 02:41:10,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/data/7676c4fc6/f8423649bc914d5785d01f573d94951c [2021-11-23 02:41:10,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:41:10,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:41:10,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:10,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:41:10,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:41:10,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:10" (1/1) ... [2021-11-23 02:41:10,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc3b723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:10, skipping insertion in model container [2021-11-23 02:41:10,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:10" (1/1) ... [2021-11-23 02:41:10,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:41:10,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:41:11,010 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_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/sv-benchmarks/c/product-lines/email_spec11_product40.cil.c[8480,8493] [2021-11-23 02:41:11,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:11,305 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:41:11,353 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_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/sv-benchmarks/c/product-lines/email_spec11_product40.cil.c[8480,8493] [2021-11-23 02:41:11,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:11,529 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:41:11,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11 WrapperNode [2021-11-23 02:41:11,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:11,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:11,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:41:11,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:41:11,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,648 INFO L137 Inliner]: procedures = 127, calls = 205, calls flagged for inlining = 52, calls inlined = 49, statements flattened = 910 [2021-11-23 02:41:11,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:11,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:41:11,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:41:11,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:41:11,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:41:11,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:41:11,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:41:11,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:41:11,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (1/1) ... [2021-11-23 02:41:11,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:11,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:11,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:41:11,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:41:11,826 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:41:11,826 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:41:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:41:11,827 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:41:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:41:11,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:41:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:41:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:41:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:41:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:41:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:41:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:41:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:41:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:41:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:41:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:41:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:41:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:41:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:41:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 02:41:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 02:41:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:41:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:41:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:41:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:41:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:41:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:41:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:41:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:41:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:41:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:41:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:41:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:41:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:41:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:41:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:41:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:41:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:41:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:41:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:41:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:41:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:41:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:41:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:41:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:41:12,015 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:41:12,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:41:13,001 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:41:13,531 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:41:13,531 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:41:13,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:13 BoogieIcfgContainer [2021-11-23 02:41:13,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:41:13,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:41:13,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:41:13,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:41:13,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:41:10" (1/3) ... [2021-11-23 02:41:13,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265c65de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:13, skipping insertion in model container [2021-11-23 02:41:13,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:11" (2/3) ... [2021-11-23 02:41:13,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265c65de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:13, skipping insertion in model container [2021-11-23 02:41:13,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:13" (3/3) ... [2021-11-23 02:41:13,549 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product40.cil.c [2021-11-23 02:41:13,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:41:13,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:41:13,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:41:13,653 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 02:41:13,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:41:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 100 states have internal predecessors, (128), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 02:41:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:41:13,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:13,724 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, 1, 1, 1, 1] [2021-11-23 02:41:13,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:41:13,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash -326575407, now seen corresponding path program 1 times [2021-11-23 02:41:13,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:13,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808188409] [2021-11-23 02:41:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:13,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:14,161 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 02:41:14,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:14,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808188409] [2021-11-23 02:41:14,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808188409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:14,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:14,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:41:14,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494657046] [2021-11-23 02:41:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:14,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:41:14,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:41:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:41:14,205 INFO L87 Difference]: Start difference. First operand has 171 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 100 states have internal predecessors, (128), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:14,422 INFO L93 Difference]: Finished difference Result 250 states and 335 transitions. [2021-11-23 02:41:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:41:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-23 02:41:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:14,450 INFO L225 Difference]: With dead ends: 250 [2021-11-23 02:41:14,450 INFO L226 Difference]: Without dead ends: 168 [2021-11-23 02:41:14,461 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 02:41:14,470 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:14,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:41:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-23 02:41:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-23 02:41:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 97 states have internal predecessors, (122), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-23 02:41:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 225 transitions. [2021-11-23 02:41:14,550 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 225 transitions. Word has length 61 [2021-11-23 02:41:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:14,552 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 225 transitions. [2021-11-23 02:41:14,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 225 transitions. [2021-11-23 02:41:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:41:14,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:14,559 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, 1, 1, 1, 1, 1] [2021-11-23 02:41:14,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:41:14,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:41:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2053130580, now seen corresponding path program 1 times [2021-11-23 02:41:14,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026898803] [2021-11-23 02:41:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:14,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:14,733 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 02:41:14,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:14,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026898803] [2021-11-23 02:41:14,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026898803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:14,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:14,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:14,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204658393] [2021-11-23 02:41:14,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:14,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:14,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:14,738 INFO L87 Difference]: Start difference. First operand 168 states and 225 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:14,895 INFO L93 Difference]: Finished difference Result 246 states and 320 transitions. [2021-11-23 02:41:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2021-11-23 02:41:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:14,900 INFO L225 Difference]: With dead ends: 246 [2021-11-23 02:41:14,901 INFO L226 Difference]: Without dead ends: 170 [2021-11-23 02:41:14,902 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 02:41:14,903 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:14,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:41:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-23 02:41:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-23 02:41:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 97 states have (on average 1.2783505154639174) internal successors, (124), 99 states have internal predecessors, (124), 52 states have call successors, (52), 20 states have call predecessors, (52), 20 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-23 02:41:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 227 transitions. [2021-11-23 02:41:14,937 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 227 transitions. Word has length 62 [2021-11-23 02:41:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:14,938 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 227 transitions. [2021-11-23 02:41:14,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:14,938 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 227 transitions. [2021-11-23 02:41:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:41:14,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:14,942 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] [2021-11-23 02:41:14,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:41:14,942 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:41:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash -967816675, now seen corresponding path program 1 times [2021-11-23 02:41:14,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765477790] [2021-11-23 02:41:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:14,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:15,077 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 02:41:15,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765477790] [2021-11-23 02:41:15,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765477790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:15,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:15,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:15,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488122345] [2021-11-23 02:41:15,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:15,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:15,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:15,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:15,082 INFO L87 Difference]: Start difference. First operand 170 states and 227 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:15,243 INFO L93 Difference]: Finished difference Result 375 states and 521 transitions. [2021-11-23 02:41:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:15,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2021-11-23 02:41:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:15,253 INFO L225 Difference]: With dead ends: 375 [2021-11-23 02:41:15,253 INFO L226 Difference]: Without dead ends: 223 [2021-11-23 02:41:15,254 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 02:41:15,266 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 59 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 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 02:41:15,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 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 02:41:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-23 02:41:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 218. [2021-11-23 02:41:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 131 states have (on average 1.366412213740458) internal successors, (179), 133 states have internal predecessors, (179), 66 states have call successors, (66), 20 states have call predecessors, (66), 20 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-23 02:41:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 310 transitions. [2021-11-23 02:41:15,337 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 310 transitions. Word has length 67 [2021-11-23 02:41:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:15,338 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 310 transitions. [2021-11-23 02:41:15,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 310 transitions. [2021-11-23 02:41:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:41:15,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:15,342 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] [2021-11-23 02:41:15,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:41:15,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:41:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash -879699755, now seen corresponding path program 1 times [2021-11-23 02:41:15,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:15,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682462964] [2021-11-23 02:41:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:15,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:15,430 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 02:41:15,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:15,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682462964] [2021-11-23 02:41:15,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682462964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:15,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024439195] [2021-11-23 02:41:15,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:15,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:15,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:15,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:15,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:41:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:15,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:41:15,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:15,938 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 02:41:15,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:16,103 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 02:41:16,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024439195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2040819917] [2021-11-23 02:41:16,135 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2021-11-23 02:41:16,136 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:16,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:16,150 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:16,153 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:51,279 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:41:51,613 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:41:51,896 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 457 for LOIs [2021-11-23 02:42:11,809 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2021-11-23 02:42:12,065 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 455 for LOIs [2021-11-23 02:42:15,073 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 252 for LOIs [2021-11-23 02:42:18,790 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 240 for LOIs [2021-11-23 02:42:18,844 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2021-11-23 02:42:18,888 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2021-11-23 02:42:19,457 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 435 for LOIs [2021-11-23 02:42:19,704 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:01,198 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 514 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:43:22,788 WARN L227 SmtUtils]: Spent 20.35s on a formula simplification. DAG size of input: 591 DAG size of output: 466 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:43:33,725 WARN L227 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 593 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:43:55,219 WARN L227 SmtUtils]: Spent 20.05s on a formula simplification. DAG size of input: 592 DAG size of output: 469 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:05,524 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 566 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:11,095 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 583 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:42,679 WARN L227 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 495 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:49,305 WARN L227 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 508 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:34,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2040819917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:34,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:45:34,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [4, 4, 4] total 55 [2021-11-23 02:45:34,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309304137] [2021-11-23 02:45:34,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:34,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-23 02:45:34,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-23 02:45:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2823, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 02:45:34,169 INFO L87 Difference]: Start difference. First operand 218 states and 310 transitions. Second operand has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 30 states have internal predecessors, (35), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:45:44,471 WARN L227 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 540 DAG size of output: 426 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:57,004 WARN L227 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 595 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:46:06,103 WARN L227 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 596 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:46:15,889 WARN L227 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 598 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:46:24,453 WARN L227 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 586 DAG size of output: 440 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:46:35,870 WARN L227 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 601 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:46:51,973 WARN L227 SmtUtils]: Spent 15.16s on a formula simplification. DAG size of input: 594 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:47:11,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:11,008 INFO L93 Difference]: Finished difference Result 522 states and 775 transitions. [2021-11-23 02:47:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-23 02:47:11,008 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 30 states have internal predecessors, (35), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 68 [2021-11-23 02:47:11,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:11,012 INFO L225 Difference]: With dead ends: 522 [2021-11-23 02:47:11,013 INFO L226 Difference]: Without dead ends: 322 [2021-11-23 02:47:11,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 270.9s TimeCoverageRelationStatistics Valid=226, Invalid=3934, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 02:47:11,016 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 259 mSDsluCounter, 6010 mSDsCounter, 0 mSdLazyCounter, 6906 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 6065 SdHoareTripleChecker+Invalid, 6946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:11,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 6065 Invalid, 6946 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [40 Valid, 6906 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2021-11-23 02:47:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-23 02:47:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 295. [2021-11-23 02:47:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 193 states have (on average 1.3626943005181347) internal successors, (263), 195 states have internal predecessors, (263), 75 states have call successors, (75), 29 states have call predecessors, (75), 26 states have return successors, (74), 70 states have call predecessors, (74), 74 states have call successors, (74) [2021-11-23 02:47:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2021-11-23 02:47:11,109 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 68 [2021-11-23 02:47:11,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:11,110 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2021-11-23 02:47:11,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 30 states have internal predecessors, (35), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:47:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2021-11-23 02:47:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 02:47:11,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:11,114 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, 1, 1, 1, 1, 1] [2021-11-23 02:47:11,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:47:11,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:47:11,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:47:11,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1741421416, now seen corresponding path program 1 times [2021-11-23 02:47:11,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:11,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105045035] [2021-11-23 02:47:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:11,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:11,440 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 02:47:11,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:11,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105045035] [2021-11-23 02:47:11,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105045035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:47:11,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697160366] [2021-11-23 02:47:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:11,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:47:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:47:11,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:47:11,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:47:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:11,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:47:11,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:47:11,831 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 02:47:11,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:47:11,985 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 02:47:11,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697160366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:47:11,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [262512199] [2021-11-23 02:47:11,989 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 02:47:11,990 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:47:11,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:47:11,991 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:47:11,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:47:44,816 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:47:45,083 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:47:45,338 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:48:52,871 WARN L227 SmtUtils]: Spent 20.35s on a formula simplification. DAG size of input: 589 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:04,370 WARN L227 SmtUtils]: Spent 9.92s on a formula simplification. DAG size of input: 591 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:16,399 WARN L227 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 590 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:26,438 WARN L227 SmtUtils]: Spent 9.31s on a formula simplification. DAG size of input: 572 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:33,898 WARN L227 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 572 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:41,706 WARN L227 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 570 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:48,577 WARN L227 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 566 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:51,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [262512199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:51,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:49:51,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:49:51,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965057828] [2021-11-23 02:49:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:51,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:49:51,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:49:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:49:51,303 INFO L87 Difference]: Start difference. First operand 295 states and 412 transitions. Second operand has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 02:50:09,604 WARN L227 SmtUtils]: Spent 16.73s on a formula simplification. DAG size of input: 533 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:24,968 WARN L227 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 461 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:30,851 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 405 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:37,074 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 403 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:52,499 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 460 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:50:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:58,245 INFO L93 Difference]: Finished difference Result 590 states and 869 transitions. [2021-11-23 02:50:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:50:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2021-11-23 02:50:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:58,249 INFO L225 Difference]: With dead ends: 590 [2021-11-23 02:50:58,250 INFO L226 Difference]: Without dead ends: 390 [2021-11-23 02:50:58,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 183.7s TimeCoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:50:58,252 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 198 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:58,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 3291 Invalid, 2299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 02:50:58,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-23 02:50:58,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 309. [2021-11-23 02:50:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 205 states have (on average 1.3658536585365855) internal successors, (280), 207 states have internal predecessors, (280), 76 states have call successors, (76), 30 states have call predecessors, (76), 27 states have return successors, (75), 71 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-23 02:50:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 431 transitions. [2021-11-23 02:50:58,385 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 431 transitions. Word has length 74 [2021-11-23 02:50:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:58,386 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 431 transitions. [2021-11-23 02:50:58,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 02:50:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 431 transitions. [2021-11-23 02:50:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:50:58,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:58,390 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, 1, 1, 1, 1, 1] [2021-11-23 02:50:58,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:50:58,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:58,606 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1666910245, now seen corresponding path program 1 times [2021-11-23 02:50:58,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:58,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412235988] [2021-11-23 02:50:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:58,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:58,699 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 02:50:58,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412235988] [2021-11-23 02:50:58,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412235988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:50:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965455445] [2021-11-23 02:50:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:58,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:58,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:50:58,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:50:58,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c5f7d8-63d9-47dc-8bc4-6fa75814c696/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:50:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:59,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:50:59,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:50:59,188 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 02:50:59,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:50:59,334 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 02:50:59,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965455445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:50:59,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1528185036] [2021-11-23 02:50:59,338 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-11-23 02:50:59,339 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:50:59,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:50:59,340 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:50:59,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:51:29,679 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 02:51:29,979 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 229 for LOIs [2021-11-23 02:51:30,046 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 228 for LOIs [2021-11-23 02:51:30,113 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 218 for LOIs [2021-11-23 02:51:31,334 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2021-11-23 02:51:31,397 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2021-11-23 02:51:31,433 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:51:31,700 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 218 for LOIs [2021-11-23 02:51:32,248 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 223 for LOIs [2021-11-23 02:51:34,048 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 211 for LOIs [2021-11-23 02:51:34,087 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 416 for LOIs [2021-11-23 02:51:35,476 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 198 for LOIs [2021-11-23 02:51:35,536 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:52:20,487 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 514 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:42,348 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 416 DAG size of output: 229 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)