./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product33.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_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/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_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/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_97c0c8fe-87bd-4132-91f1-a87278fa38d1/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 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:25:23,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:25:23,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:25:24,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:25:24,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:25:24,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:25:24,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:25:24,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:25:24,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:25:24,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:25:24,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:25:24,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:25:24,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:25:24,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:25:24,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:25:24,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:25:24,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:25:24,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:25:24,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:25:24,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:25:24,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:25:24,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:25:24,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:25:24,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:25:24,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:25:24,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:25:24,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:25:24,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:25:24,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:25:24,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:25:24,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:25:24,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:25:24,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:25:24,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:25:24,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:25:24,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:25:24,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:25:24,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:25:24,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:25:24,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:25:24,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:25:24,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:25:24,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:25:24,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:25:24,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:25:24,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:25:24,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:25:24,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:25:24,138 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:25:24,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:25:24,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:25:24,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:25:24,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:25:24,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:25:24,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:25:24,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:25:24,140 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:25:24,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:25:24,140 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:25:24,141 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:25:24,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:25:24,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:25:24,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:25:24,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:25:24,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:25:24,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:25:24,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:25:24,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:25:24,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:25:24,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:25:24,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:25:24,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:25:24,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:25:24,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:25:24,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:25:24,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:25:24,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:25:24,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:25:24,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:25:24,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:25:24,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:25:24,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:25:24,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:25:24,153 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_97c0c8fe-87bd-4132-91f1-a87278fa38d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 [2021-11-23 03:25:24,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:25:24,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:25:24,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:25:24,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:25:24,491 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:25:24,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2021-11-23 03:25:24,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/data/d8711e570/0eb36a7a76f1461eab7ef8f108d7b9cf/FLAG51f29b97a [2021-11-23 03:25:25,196 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:25:25,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2021-11-23 03:25:25,224 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/data/d8711e570/0eb36a7a76f1461eab7ef8f108d7b9cf/FLAG51f29b97a [2021-11-23 03:25:25,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/data/d8711e570/0eb36a7a76f1461eab7ef8f108d7b9cf [2021-11-23 03:25:25,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:25:25,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:25:25,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:25:25,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:25:25,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:25:25,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:25" (1/1) ... [2021-11-23 03:25:25,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c2b1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25, skipping insertion in model container [2021-11-23 03:25:25,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:25" (1/1) ... [2021-11-23 03:25:25,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:25:25,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:25:25,855 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_97c0c8fe-87bd-4132-91f1-a87278fa38d1/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2021-11-23 03:25:26,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:25:26,172 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:25:26,204 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_97c0c8fe-87bd-4132-91f1-a87278fa38d1/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2021-11-23 03:25:26,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:25:26,351 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:25:26,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26 WrapperNode [2021-11-23 03:25:26,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:25:26,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:25:26,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:25:26,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:25:26,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,491 INFO L137 Inliner]: procedures = 135, calls = 233, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1084 [2021-11-23 03:25:26,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:25:26,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:25:26,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:25:26,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:25:26,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:25:26,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:25:26,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:25:26,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:25:26,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (1/1) ... [2021-11-23 03:25:26,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:25:26,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:26,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:25:26,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:25:26,688 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 03:25:26,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 03:25:26,688 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 03:25:26,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 03:25:26,689 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 03:25:26,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 03:25:26,689 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:25:26,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:25:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:25:26,690 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:25:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:25:26,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:25:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:25:26,691 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:25:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 03:25:26,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 03:25:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:25:26,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:25:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:25:26,692 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:25:26,692 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:25:26,692 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:25:26,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:25:26,692 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 03:25:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 03:25:26,693 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:25:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:25:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:25:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:25:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:25:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 03:25:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 03:25:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:25:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:25:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:25:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:25:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:25:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:25:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 03:25:26,720 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 03:25:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:25:26,720 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:25:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 03:25:26,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 03:25:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:25:26,721 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:25:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:25:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:25:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:25:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:25:26,725 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:25:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:25:26,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:25:27,036 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:25:27,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:25:27,909 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:25:28,361 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:25:28,361 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:25:28,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:28 BoogieIcfgContainer [2021-11-23 03:25:28,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:25:28,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:25:28,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:25:28,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:25:28,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:25:25" (1/3) ... [2021-11-23 03:25:28,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fa301a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:28, skipping insertion in model container [2021-11-23 03:25:28,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:26" (2/3) ... [2021-11-23 03:25:28,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fa301a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:28, skipping insertion in model container [2021-11-23 03:25:28,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:28" (3/3) ... [2021-11-23 03:25:28,375 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.c [2021-11-23 03:25:28,382 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:25:28,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:25:28,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:25:28,479 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 03:25:28,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:25:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-23 03:25:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:25:28,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:28,550 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, 1, 1] [2021-11-23 03:25:28,551 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:28,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1185764651, now seen corresponding path program 1 times [2021-11-23 03:25:28,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:28,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600885083] [2021-11-23 03:25:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:28,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:28,995 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 03:25:28,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:28,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600885083] [2021-11-23 03:25:28,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600885083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:28,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:25:28,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:25:29,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514494072] [2021-11-23 03:25:29,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:29,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:25:29,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:25:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:25:29,040 INFO L87 Difference]: Start difference. First operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:25:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:29,295 INFO L93 Difference]: Finished difference Result 341 states and 452 transitions. [2021-11-23 03:25:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:25:29,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2021-11-23 03:25:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:29,334 INFO L225 Difference]: With dead ends: 341 [2021-11-23 03:25:29,334 INFO L226 Difference]: Without dead ends: 209 [2021-11-23 03:25:29,349 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 03:25:29,357 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:29,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:25:29,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-23 03:25:29,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-11-23 03:25:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 121 states have (on average 1.28099173553719) internal successors, (155), 124 states have internal predecessors, (155), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-23 03:25:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2021-11-23 03:25:29,478 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 64 [2021-11-23 03:25:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:29,481 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2021-11-23 03:25:29,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:25:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2021-11-23 03:25:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:25:29,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:29,500 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, 1, 1, 1] [2021-11-23 03:25:29,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:25:29,501 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash -789631117, now seen corresponding path program 1 times [2021-11-23 03:25:29,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914231980] [2021-11-23 03:25:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:29,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:29,697 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 03:25:29,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:29,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914231980] [2021-11-23 03:25:29,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914231980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:29,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:25:29,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:25:29,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996624919] [2021-11-23 03:25:29,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:29,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:25:29,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:25:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:25:29,703 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:25:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:29,928 INFO L93 Difference]: Finished difference Result 337 states and 440 transitions. [2021-11-23 03:25:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:25:29,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2021-11-23 03:25:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:29,943 INFO L225 Difference]: With dead ends: 337 [2021-11-23 03:25:29,943 INFO L226 Difference]: Without dead ends: 211 [2021-11-23 03:25:29,949 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 03:25:29,953 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:29,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:25:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-23 03:25:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-11-23 03:25:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 126 states have internal predecessors, (157), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-23 03:25:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2021-11-23 03:25:29,986 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 65 [2021-11-23 03:25:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:29,987 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2021-11-23 03:25:29,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:25:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2021-11-23 03:25:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 03:25:29,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:29,992 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] [2021-11-23 03:25:29,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:25:29,993 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2054379677, now seen corresponding path program 1 times [2021-11-23 03:25:29,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:29,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586347583] [2021-11-23 03:25:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:29,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:30,179 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 03:25:30,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:30,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586347583] [2021-11-23 03:25:30,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586347583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:30,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:25:30,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:25:30,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975298339] [2021-11-23 03:25:30,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:30,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:25:30,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:25:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:25:30,184 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:25:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:30,384 INFO L93 Difference]: Finished difference Result 452 states and 623 transitions. [2021-11-23 03:25:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:25:30,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-23 03:25:30,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:30,390 INFO L225 Difference]: With dead ends: 452 [2021-11-23 03:25:30,391 INFO L226 Difference]: Without dead ends: 259 [2021-11-23 03:25:30,393 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 03:25:30,404 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 57 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:30,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 492 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:25:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-23 03:25:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2021-11-23 03:25:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 155 states have (on average 1.3548387096774193) internal successors, (210), 158 states have internal predecessors, (210), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-23 03:25:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2021-11-23 03:25:30,463 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 70 [2021-11-23 03:25:30,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:30,466 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2021-11-23 03:25:30,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:25:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2021-11-23 03:25:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 03:25:30,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:30,477 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] [2021-11-23 03:25:30,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:25:30,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash 998407012, now seen corresponding path program 1 times [2021-11-23 03:25:30,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:30,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274226771] [2021-11-23 03:25:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:30,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:30,683 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 03:25:30,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:30,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274226771] [2021-11-23 03:25:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274226771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:25:30,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013059548] [2021-11-23 03:25:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:30,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:30,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:30,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:25:30,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:25:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:31,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:25:31,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:25:31,294 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 03:25:31,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:25:31,474 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 03:25:31,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013059548] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:25:31,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [255541198] [2021-11-23 03:25:31,501 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 03:25:31,501 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:25:31,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:25:31,514 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:25:31,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:26:03,083 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 03:26:03,488 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 03:26:03,824 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 271 for LOIs [2021-11-23 03:26:06,435 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2021-11-23 03:26:06,514 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 273 for LOIs [2021-11-23 03:26:23,884 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 231 for LOIs [2021-11-23 03:26:23,932 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2021-11-23 03:26:24,040 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2021-11-23 03:26:24,097 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2021-11-23 03:26:25,866 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:26:38,106 WARN L227 SmtUtils]: Spent 5.06s 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 03:26:43,686 WARN L227 SmtUtils]: Spent 5.49s 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 03:26:50,319 WARN L227 SmtUtils]: Spent 5.76s 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 03:26:56,329 WARN L227 SmtUtils]: Spent 5.78s 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 03:27:05,628 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 480 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:42,956 WARN L227 SmtUtils]: Spent 19.84s on a formula simplification. DAG size of input: 594 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:04,592 WARN L227 SmtUtils]: Spent 19.98s on a formula simplification. DAG size of input: 596 DAG size of output: 468 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:19,474 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 564 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:31,630 WARN L227 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 477 DAG size of output: 283 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:29:21,848 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 583 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:29:25,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [255541198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:25,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:29:25,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2021-11-23 03:29:25,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794848810] [2021-11-23 03:29:25,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:25,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-23 03:29:25,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-23 03:29:25,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2624, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 03:29:25,548 INFO L87 Difference]: Start difference. First operand 254 states and 357 transitions. Second operand has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:29:35,659 WARN L227 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 561 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:29:43,870 WARN L227 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 563 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:29:52,312 WARN L227 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 595 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:00,828 WARN L227 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 593 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:09,746 WARN L227 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 579 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:18,019 WARN L227 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 588 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:30,015 WARN L227 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 595 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:38,109 WARN L227 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 590 DAG size of output: 386 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:10,203 INFO L93 Difference]: Finished difference Result 653 states and 982 transitions. [2021-11-23 03:31:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-23 03:31:10,204 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2021-11-23 03:31:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:10,208 INFO L225 Difference]: With dead ends: 653 [2021-11-23 03:31:10,208 INFO L226 Difference]: Without dead ends: 417 [2021-11-23 03:31:10,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 263.1s TimeCoverageRelationStatistics Valid=229, Invalid=4061, Unknown=0, NotChecked=0, Total=4290 [2021-11-23 03:31:10,213 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 248 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 6529 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 7059 SdHoareTripleChecker+Invalid, 6568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 6529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:10,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 7059 Invalid, 6568 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [39 Valid, 6529 Invalid, 0 Unknown, 0 Unchecked, 20.8s Time] [2021-11-23 03:31:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-23 03:31:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2021-11-23 03:31:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 240 states have (on average 1.4125) internal successors, (339), 243 states have internal predecessors, (339), 82 states have call successors, (82), 32 states have call predecessors, (82), 30 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-23 03:31:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 502 transitions. [2021-11-23 03:31:10,353 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 502 transitions. Word has length 71 [2021-11-23 03:31:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:10,354 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 502 transitions. [2021-11-23 03:31:10,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:31:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 502 transitions. [2021-11-23 03:31:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 03:31:10,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:10,357 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, 1, 1, 1] [2021-11-23 03:31:10,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:10,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:10,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1192123605, now seen corresponding path program 1 times [2021-11-23 03:31:10,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:10,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782945372] [2021-11-23 03:31:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:10,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:10,666 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 03:31:10,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:10,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782945372] [2021-11-23 03:31:10,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782945372] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:31:10,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808272814] [2021-11-23 03:31:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:10,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:10,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:10,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:10,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:31:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:10,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:31:10,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:11,068 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 03:31:11,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:11,234 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 03:31:11,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808272814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:31:11,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [92113293] [2021-11-23 03:31:11,243 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2021-11-23 03:31:11,243 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:31:11,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:31:11,244 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:31:11,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:31:43,562 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 03:31:43,816 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-23 03:31:44,067 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:32:55,357 WARN L227 SmtUtils]: Spent 19.39s on a formula simplification. DAG size of input: 589 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:17,222 WARN L227 SmtUtils]: Spent 20.05s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:26,197 WARN L227 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 572 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:35,306 WARN L227 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 568 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:43,333 WARN L227 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 570 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:51,271 WARN L227 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 566 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:57,056 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 564 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:59,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [92113293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:59,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:33:59,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 03:33:59,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790476225] [2021-11-23 03:33:59,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:59,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 03:33:59,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:59,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 03:33:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:33:59,491 INFO L87 Difference]: Start difference. First operand 353 states and 502 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-23 03:34:16,995 WARN L227 SmtUtils]: Spent 16.24s on a formula simplification. DAG size of input: 554 DAG size of output: 454 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:33,044 WARN L227 SmtUtils]: Spent 15.74s on a formula simplification. DAG size of input: 554 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:58,244 WARN L227 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 572 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:06,389 WARN L227 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 590 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:13,822 INFO L93 Difference]: Finished difference Result 673 states and 992 transitions. [2021-11-23 03:35:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:35:13,823 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 77 [2021-11-23 03:35:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:13,828 INFO L225 Difference]: With dead ends: 673 [2021-11-23 03:35:13,828 INFO L226 Difference]: Without dead ends: 437 [2021-11-23 03:35:13,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 200.4s TimeCoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 03:35:13,831 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 237 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 2572 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:13,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 4216 Invalid, 2591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2572 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-11-23 03:35:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-23 03:35:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 366. [2021-11-23 03:35:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 250 states have (on average 1.412) internal successors, (353), 254 states have internal predecessors, (353), 84 states have call successors, (84), 33 states have call predecessors, (84), 31 states have return successors, (83), 80 states have call predecessors, (83), 83 states have call successors, (83) [2021-11-23 03:35:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 520 transitions. [2021-11-23 03:35:13,967 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 520 transitions. Word has length 77 [2021-11-23 03:35:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:13,968 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 520 transitions. [2021-11-23 03:35:13,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-23 03:35:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 520 transitions. [2021-11-23 03:35:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 03:35:13,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:13,970 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, 1, 1, 1] [2021-11-23 03:35:14,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:14,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:14,198 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash -39431252, now seen corresponding path program 1 times [2021-11-23 03:35:14,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:14,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200316520] [2021-11-23 03:35:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:14,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:14,328 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 03:35:14,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:14,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200316520] [2021-11-23 03:35:14,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200316520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:14,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282056417] [2021-11-23 03:35:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:14,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:14,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:14,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c0c8fe-87bd-4132-91f1-a87278fa38d1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:35:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:14,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:35:14,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:14,760 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 03:35:14,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:14,905 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 03:35:14,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282056417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:35:14,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245587200] [2021-11-23 03:35:14,910 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-23 03:35:14,910 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:35:14,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:35:14,911 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:35:14,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:35:48,055 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 03:35:48,304 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 236 for LOIs [2021-11-23 03:35:48,413 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 245 for LOIs [2021-11-23 03:35:48,483 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 453 for LOIs [2021-11-23 03:35:48,773 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 03:35:49,032 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:36:10,388 WARN L227 SmtUtils]: Spent 5.03s 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 03:36:15,891 WARN L227 SmtUtils]: Spent 5.31s 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 03:36:48,738 WARN L227 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 635 DAG size of output: 406 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)