./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product32.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_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/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_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/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_8e7819ef-3ad8-4d3b-a361-7d49d393e975/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 614dee6ac528b2b5bcd12e57f515dcc43213e2cedeb5bd1e2531b305b02c78fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:54:03,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:54:03,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:54:03,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:54:03,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:54:03,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:54:03,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:54:03,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:54:03,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:54:03,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:54:03,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:54:03,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:54:03,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:54:03,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:54:03,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:54:03,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:54:03,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:54:03,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:54:03,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:54:03,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:54:03,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:54:03,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:54:03,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:54:03,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:54:03,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:54:03,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:54:03,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:54:03,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:54:03,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:54:03,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:54:03,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:54:03,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:54:03,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:54:03,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:54:03,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:54:03,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:54:03,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:54:03,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:54:03,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:54:03,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:54:03,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:54:03,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:54:03,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:54:03,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:54:03,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:54:03,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:54:03,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:54:03,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:54:03,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:54:03,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:54:03,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:54:03,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:54:03,656 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:54:03,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:54:03,657 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:54:03,657 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:54:03,657 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:54:03,658 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:54:03,658 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:54:03,658 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:54:03,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:54:03,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:54:03,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:54:03,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:54:03,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:54:03,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:54:03,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:54:03,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:54:03,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:54:03,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:54:03,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:54:03,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:54:03,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:54:03,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:54:03,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:54:03,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:54:03,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:54:03,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:54:03,665 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:54:03,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:54:03,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:54:03,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:54:03,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:54:03,667 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_8e7819ef-3ad8-4d3b-a361-7d49d393e975/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 614dee6ac528b2b5bcd12e57f515dcc43213e2cedeb5bd1e2531b305b02c78fa [2021-11-23 01:54:04,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:54:04,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:54:04,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:54:04,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:54:04,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:54:04,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec8_product32.cil.c [2021-11-23 01:54:04,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/data/a955f0064/3cc86fc8d10c47ba99109d2f2af7e1eb/FLAG6e1d9767d [2021-11-23 01:54:05,125 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:54:05,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c [2021-11-23 01:54:05,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/data/a955f0064/3cc86fc8d10c47ba99109d2f2af7e1eb/FLAG6e1d9767d [2021-11-23 01:54:05,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/data/a955f0064/3cc86fc8d10c47ba99109d2f2af7e1eb [2021-11-23 01:54:05,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:54:05,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:54:05,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:54:05,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:54:05,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:54:05,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:05" (1/1) ... [2021-11-23 01:54:05,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2de58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:05, skipping insertion in model container [2021-11-23 01:54:05,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:05" (1/1) ... [2021-11-23 01:54:05,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:54:05,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:54:06,006 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_8e7819ef-3ad8-4d3b-a361-7d49d393e975/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c[37064,37077] [2021-11-23 01:54:06,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:54:06,191 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:54:06,289 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_8e7819ef-3ad8-4d3b-a361-7d49d393e975/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c[37064,37077] [2021-11-23 01:54:06,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:54:06,418 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:54:06,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06 WrapperNode [2021-11-23 01:54:06,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:54:06,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:54:06,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:54:06,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:54:06,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,563 INFO L137 Inliner]: procedures = 135, calls = 242, calls flagged for inlining = 62, calls inlined = 54, statements flattened = 1001 [2021-11-23 01:54:06,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:54:06,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:54:06,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:54:06,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:54:06,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:54:06,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:54:06,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:54:06,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:54:06,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (1/1) ... [2021-11-23 01:54:06,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:54:06,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:54:06,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:54:06,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:54:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 01:54:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 01:54:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 01:54:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 01:54:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 01:54:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 01:54:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 01:54:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 01:54:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 01:54:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 01:54:06,785 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 01:54:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 01:54:06,785 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 01:54:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 01:54:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 01:54:06,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 01:54:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 01:54:06,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 01:54:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 01:54:06,787 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 01:54:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 01:54:06,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 01:54:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 01:54:06,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 01:54:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 01:54:06,788 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 01:54:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 01:54:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 01:54:06,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 01:54:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 01:54:06,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 01:54:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:54:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 01:54:06,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 01:54:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 01:54:06,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 01:54:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 01:54:06,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 01:54:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 01:54:06,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 01:54:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 01:54:06,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 01:54:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 01:54:06,795 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 01:54:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 01:54:06,796 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 01:54:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 01:54:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 01:54:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 01:54:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 01:54:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 01:54:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 01:54:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 01:54:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 01:54:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:54:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 01:54:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 01:54:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 01:54:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 01:54:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:54:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:54:07,241 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:54:07,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:54:08,327 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:54:08,963 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:54:08,964 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:54:08,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:08 BoogieIcfgContainer [2021-11-23 01:54:08,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:54:08,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:54:08,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:54:08,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:54:08,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:54:05" (1/3) ... [2021-11-23 01:54:08,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d45c08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:08, skipping insertion in model container [2021-11-23 01:54:08,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:06" (2/3) ... [2021-11-23 01:54:08,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d45c08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:08, skipping insertion in model container [2021-11-23 01:54:08,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:08" (3/3) ... [2021-11-23 01:54:08,977 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product32.cil.c [2021-11-23 01:54:08,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:54:08,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:54:09,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:54:09,059 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 01:54:09,059 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:54:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-23 01:54:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 01:54:09,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:09,104 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, 1, 1, 1, 1, 1, 1] [2021-11-23 01:54:09,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:54:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:09,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1092945794, now seen corresponding path program 1 times [2021-11-23 01:54:09,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:09,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251907725] [2021-11-23 01:54:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:09,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:09,673 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 01:54:09,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251907725] [2021-11-23 01:54:09,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251907725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:09,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:09,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:54:09,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786680504] [2021-11-23 01:54:09,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:09,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:54:09,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:54:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:54:09,735 INFO L87 Difference]: Start difference. First operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 01:54:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:09,999 INFO L93 Difference]: Finished difference Result 346 states and 455 transitions. [2021-11-23 01:54:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:54:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2021-11-23 01:54:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:10,032 INFO L225 Difference]: With dead ends: 346 [2021-11-23 01:54:10,033 INFO L226 Difference]: Without dead ends: 216 [2021-11-23 01:54:10,043 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 01:54:10,052 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:10,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:54:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-23 01:54:10,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-23 01:54:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.278688524590164) internal successors, (156), 126 states have internal predecessors, (156), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 01:54:10,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2021-11-23 01:54:10,158 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 71 [2021-11-23 01:54:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:10,160 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2021-11-23 01:54:10,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 01:54:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2021-11-23 01:54:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 01:54:10,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:10,184 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:54:10,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:54:10,185 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:54:10,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -572694895, now seen corresponding path program 1 times [2021-11-23 01:54:10,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:10,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99487352] [2021-11-23 01:54:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:10,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:10,429 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 01:54:10,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:10,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99487352] [2021-11-23 01:54:10,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99487352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:10,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:10,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:54:10,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728451086] [2021-11-23 01:54:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:10,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:54:10,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:54:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:54:10,434 INFO L87 Difference]: Start difference. First operand 216 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 01:54:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:10,634 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2021-11-23 01:54:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:54:10,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2021-11-23 01:54:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:10,642 INFO L225 Difference]: With dead ends: 342 [2021-11-23 01:54:10,642 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 01:54:10,645 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 01:54:10,647 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:10,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:54:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 01:54:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-23 01:54:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 01:54:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 287 transitions. [2021-11-23 01:54:10,708 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 287 transitions. Word has length 72 [2021-11-23 01:54:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:10,709 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 287 transitions. [2021-11-23 01:54:10,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 01:54:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 287 transitions. [2021-11-23 01:54:10,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 01:54:10,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:10,713 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 01:54:10,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:54:10,714 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:54:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash 940799684, now seen corresponding path program 1 times [2021-11-23 01:54:10,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:10,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360075544] [2021-11-23 01:54:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:10,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:10,872 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 01:54:10,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:10,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360075544] [2021-11-23 01:54:10,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360075544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:10,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:10,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:54:10,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378778623] [2021-11-23 01:54:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:10,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:54:10,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:54:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:54:10,880 INFO L87 Difference]: Start difference. First operand 218 states and 287 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 01:54:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:11,075 INFO L93 Difference]: Finished difference Result 471 states and 641 transitions. [2021-11-23 01:54:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:54:11,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2021-11-23 01:54:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:11,081 INFO L225 Difference]: With dead ends: 471 [2021-11-23 01:54:11,082 INFO L226 Difference]: Without dead ends: 271 [2021-11-23 01:54:11,083 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 01:54:11,093 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 59 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:11,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 505 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:54:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-23 01:54:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2021-11-23 01:54:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 162 states have internal predecessors, (213), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-23 01:54:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2021-11-23 01:54:11,151 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 77 [2021-11-23 01:54:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:11,154 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2021-11-23 01:54:11,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 01:54:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2021-11-23 01:54:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 01:54:11,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:11,161 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] [2021-11-23 01:54:11,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:54:11,162 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:54:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -75589118, now seen corresponding path program 1 times [2021-11-23 01:54:11,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:11,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387209194] [2021-11-23 01:54:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:11,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:11,372 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 01:54:11,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:11,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387209194] [2021-11-23 01:54:11,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387209194] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:54:11,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196157452] [2021-11-23 01:54:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:11,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:54:11,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:54:11,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:54:11,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:54:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:11,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:54:11,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:54:12,083 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 01:54:12,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:54:12,402 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 01:54:12,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196157452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:54:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [945418643] [2021-11-23 01:54:12,462 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2021-11-23 01:54:12,463 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:54:12,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:54:12,477 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:54:12,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:54:44,837 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 01:54:45,180 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 269 for LOIs [2021-11-23 01:54:47,707 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 01:54:47,764 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 01:54:48,097 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 271 for LOIs [2021-11-23 01:54:52,383 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 227 for LOIs [2021-11-23 01:54:52,435 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 280 for LOIs [2021-11-23 01:54:59,955 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 250 for LOIs [2021-11-23 01:55:00,053 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 01:55:00,111 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2021-11-23 01:55:02,122 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 255 for LOIs [2021-11-23 01:55:02,193 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:55:17,033 WARN L227 SmtUtils]: Spent 6.06s 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 01:55:23,372 WARN L227 SmtUtils]: Spent 6.23s 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 01:55:30,644 WARN L227 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:55:37,389 WARN L227 SmtUtils]: Spent 6.52s 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 01:55:43,381 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 468 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:55:49,268 WARN L227 SmtUtils]: Spent 5.55s 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 01:56:01,187 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 502 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:56:08,431 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 512 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:56:23,531 WARN L227 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 567 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:56:29,481 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 569 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:56:35,569 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 565 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:56:42,708 WARN L227 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 564 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:56:49,577 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 557 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:57:08,101 WARN L227 SmtUtils]: Spent 14.79s on a formula simplification. DAG size of input: 477 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:57:56,503 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 471 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:58:19,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [945418643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:19,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:58:19,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2021-11-23 01:58:19,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669795732] [2021-11-23 01:58:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:19,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-23 01:58:19,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:19,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-23 01:58:19,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3268, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 01:58:19,620 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 01:58:32,730 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 492 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 01:59:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:40,820 INFO L93 Difference]: Finished difference Result 716 states and 1084 transitions. [2021-11-23 01:59:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-23 01:59:40,821 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2021-11-23 01:59:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:40,827 INFO L225 Difference]: With dead ends: 716 [2021-11-23 01:59:40,827 INFO L226 Difference]: Without dead ends: 468 [2021-11-23 01:59:40,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 176 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 242.6s TimeCoverageRelationStatistics Valid=243, Invalid=4869, Unknown=0, NotChecked=0, Total=5112 [2021-11-23 01:59:40,833 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 292 mSDsluCounter, 8217 mSDsCounter, 0 mSdLazyCounter, 9640 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 8319 SdHoareTripleChecker+Invalid, 9687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 9640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:40,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 8319 Invalid, 9687 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [47 Valid, 9640 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time] [2021-11-23 01:59:40,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-23 01:59:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 363. [2021-11-23 01:59:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 238 states have (on average 1.403361344537815) internal successors, (334), 242 states have internal predecessors, (334), 89 states have call successors, (89), 38 states have call predecessors, (89), 35 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2021-11-23 01:59:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 511 transitions. [2021-11-23 01:59:40,984 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 511 transitions. Word has length 78 [2021-11-23 01:59:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:40,985 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 511 transitions. [2021-11-23 01:59:40,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 01:59:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 511 transitions. [2021-11-23 01:59:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 01:59:40,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:40,990 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, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:41,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:41,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:59:41,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:59:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1864649718, now seen corresponding path program 1 times [2021-11-23 01:59:41,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:59:41,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307141319] [2021-11-23 01:59:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:41,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:59:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 01:59:41,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:59:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307141319] [2021-11-23 01:59:41,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307141319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:41,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:41,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:59:41,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861762776] [2021-11-23 01:59:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:41,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:59:41,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:59:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:59:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:59:41,335 INFO L87 Difference]: Start difference. First operand 363 states and 511 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 01:59:41,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:41,670 INFO L93 Difference]: Finished difference Result 813 states and 1178 transitions. [2021-11-23 01:59:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:59:41,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2021-11-23 01:59:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:41,678 INFO L225 Difference]: With dead ends: 813 [2021-11-23 01:59:41,678 INFO L226 Difference]: Without dead ends: 488 [2021-11-23 01:59:41,680 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 01:59:41,681 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 57 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:41,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 514 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-23 01:59:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 481. [2021-11-23 01:59:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 325 states have (on average 1.44) internal successors, (468), 329 states have internal predecessors, (468), 120 states have call successors, (120), 38 states have call predecessors, (120), 35 states have return successors, (119), 115 states have call predecessors, (119), 119 states have call successors, (119) [2021-11-23 01:59:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 707 transitions. [2021-11-23 01:59:41,907 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 707 transitions. Word has length 83 [2021-11-23 01:59:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:41,908 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 707 transitions. [2021-11-23 01:59:41,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 01:59:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 707 transitions. [2021-11-23 01:59:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 01:59:41,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:41,913 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:41,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:59:41,914 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:59:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash -908353717, now seen corresponding path program 1 times [2021-11-23 01:59:41,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:59:41,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688299685] [2021-11-23 01:59:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:41,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:59:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:42,011 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 01:59:42,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:59:42,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688299685] [2021-11-23 01:59:42,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688299685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:59:42,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072196929] [2021-11-23 01:59:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:42,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:59:42,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:59:42,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:59:42,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 01:59:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:42,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:59:42,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:42,598 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 01:59:42,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:42,854 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 01:59:42,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072196929] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:59:42,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729249555] [2021-11-23 01:59:42,866 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2021-11-23 01:59:42,866 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:59:42,867 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:59:42,868 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:59:42,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:00:14,565 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:00:14,891 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2021-11-23 02:00:17,060 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2021-11-23 02:00:17,111 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-23 02:00:17,423 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 264 for LOIs [2021-11-23 02:00:21,052 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 222 for LOIs [2021-11-23 02:00:21,101 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 275 for LOIs [2021-11-23 02:00:28,373 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2021-11-23 02:00:28,466 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2021-11-23 02:00:28,521 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 02:00:30,372 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2021-11-23 02:00:30,439 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:00:45,469 WARN L227 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:52,219 WARN L227 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:58,193 WARN L227 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:04,643 WARN L227 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:10,984 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 468 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:16,898 WARN L227 SmtUtils]: Spent 5.67s 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 02:01:29,330 WARN L227 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 502 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:36,693 WARN L227 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 512 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:00,663 WARN L227 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:43,427 WARN L227 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 472 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:02,902 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 481 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:10,622 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 523 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:14,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [729249555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:03:14,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:03:14,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2021-11-23 02:03:14,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985884278] [2021-11-23 02:03:14,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:03:14,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-23 02:03:14,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:03:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-23 02:03:14,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3718, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 02:03:14,579 INFO L87 Difference]: Start difference. First operand 481 states and 707 transitions. Second operand has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:04:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:04:39,460 INFO L93 Difference]: Finished difference Result 1004 states and 1497 transitions. [2021-11-23 02:04:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-23 02:04:39,461 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 84 [2021-11-23 02:04:39,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:04:39,468 INFO L225 Difference]: With dead ends: 1004 [2021-11-23 02:04:39,469 INFO L226 Difference]: Without dead ends: 656 [2021-11-23 02:04:39,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 220.1s TimeCoverageRelationStatistics Valid=327, Invalid=5835, Unknown=0, NotChecked=0, Total=6162 [2021-11-23 02:04:39,474 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 229 mSDsluCounter, 7524 mSDsCounter, 0 mSdLazyCounter, 8549 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 7580 SdHoareTripleChecker+Invalid, 8590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 8549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:04:39,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 7580 Invalid, 8590 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [41 Valid, 8549 Invalid, 0 Unknown, 0 Unchecked, 28.3s Time] [2021-11-23 02:04:39,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-23 02:04:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 494. [2021-11-23 02:04:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 335 states have (on average 1.4417910447761193) internal successors, (483), 340 states have internal predecessors, (483), 122 states have call successors, (122), 39 states have call predecessors, (122), 36 states have return successors, (121), 116 states have call predecessors, (121), 121 states have call successors, (121) [2021-11-23 02:04:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 726 transitions. [2021-11-23 02:04:39,671 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 726 transitions. Word has length 84 [2021-11-23 02:04:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:04:39,672 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 726 transitions. [2021-11-23 02:04:39,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:04:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 726 transitions. [2021-11-23 02:04:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:04:39,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:04:39,677 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:04:39,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:04:39,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:39,894 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:04:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:04:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash 507086192, now seen corresponding path program 1 times [2021-11-23 02:04:39,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:04:39,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922396604] [2021-11-23 02:04:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:39,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:04:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:39,987 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 02:04:39,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:04:39,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922396604] [2021-11-23 02:04:39,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922396604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:04:39,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604874036] [2021-11-23 02:04:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:39,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:39,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:04:39,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:04:40,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7819ef-3ad8-4d3b-a361-7d49d393e975/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:04:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:40,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:04:40,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:04:40,554 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 02:04:40,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:04:40,776 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 02:04:40,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604874036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:04:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621494979] [2021-11-23 02:04:40,781 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2021-11-23 02:04:40,782 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:04:40,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:04:40,783 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:04:40,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs