./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_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_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/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_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/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_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/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 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:22:59,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:22:59,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:22:59,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:22:59,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:22:59,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:22:59,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:22:59,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:22:59,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:22:59,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:22:59,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:22:59,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:22:59,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:22:59,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:22:59,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:22:59,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:22:59,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:22:59,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:22:59,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:22:59,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:22:59,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:22:59,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:22:59,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:22:59,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:22:59,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:22:59,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:22:59,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:22:59,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:22:59,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:22:59,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:22:59,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:22:59,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:22:59,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:22:59,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:22:59,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:22:59,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:22:59,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:22:59,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:22:59,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:22:59,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:22:59,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:22:59,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:22:59,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:22:59,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:22:59,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:22:59,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:22:59,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:22:59,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:22:59,929 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:22:59,930 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:22:59,930 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:22:59,930 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:22:59,930 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:22:59,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:22:59,930 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:22:59,931 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:22:59,931 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:22:59,931 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:22:59,931 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:22:59,931 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:22:59,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:22:59,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:22:59,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:22:59,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:22:59,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:22:59,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:22:59,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:22:59,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:22:59,933 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:22:59,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:22:59,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:22:59,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:22:59,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:22:59,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:22:59,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:22:59,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:22:59,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:22:59,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:22:59,935 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:22:59,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:22:59,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:22:59,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:22:59,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:22:59,936 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_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e [2021-11-23 02:23:00,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:23:00,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:23:00,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:23:00,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:23:00,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:23:00,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2021-11-23 02:23:00,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/data/02fcc9e2d/5bcf274aeab34ee39b0eb2092255b0e7/FLAGfa4a10cdd [2021-11-23 02:23:01,237 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:23:01,244 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2021-11-23 02:23:01,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/data/02fcc9e2d/5bcf274aeab34ee39b0eb2092255b0e7/FLAGfa4a10cdd [2021-11-23 02:23:01,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/data/02fcc9e2d/5bcf274aeab34ee39b0eb2092255b0e7 [2021-11-23 02:23:01,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:23:01,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:23:01,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:23:01,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:23:01,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:23:01,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:01" (1/1) ... [2021-11-23 02:23:01,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b9bbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:01, skipping insertion in model container [2021-11-23 02:23:01,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:01" (1/1) ... [2021-11-23 02:23:01,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:23:01,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:23:02,180 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_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2021-11-23 02:23:02,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:23:02,201 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:23:02,340 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_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2021-11-23 02:23:02,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:23:02,383 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:23:02,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02 WrapperNode [2021-11-23 02:23:02,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:23:02,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:23:02,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:23:02,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:23:02,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,506 INFO L137 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 987 [2021-11-23 02:23:02,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:23:02,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:23:02,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:23:02,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:23:02,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:23:02,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:23:02,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:23:02,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:23:02,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (1/1) ... [2021-11-23 02:23:02,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:23:02,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:23:02,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:23:02,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:23:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:23:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:23:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:23:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:23:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:23:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:23:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:23:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:23:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:23:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:23:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:23:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:23:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:23:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:23:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:23:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:23:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:23:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:23:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:23:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:23:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:23:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:23:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:23:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:23:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:23:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:23:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:23:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:23:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:23:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:23:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:23:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:23:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:23:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:23:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:23:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:23:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:23:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:23:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:23:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:23:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:23:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:23:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:23:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:23:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:23:02,760 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:23:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:23:02,760 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:23:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:23:02,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:23:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:23:02,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:23:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:23:02,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:23:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:23:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:23:02,762 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:23:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:23:02,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:23:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:23:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:23:03,080 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:23:03,086 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:23:04,259 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:23:04,777 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:23:04,778 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:23:04,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:04 BoogieIcfgContainer [2021-11-23 02:23:04,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:23:04,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:23:04,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:23:04,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:23:04,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:23:01" (1/3) ... [2021-11-23 02:23:04,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2d09ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:04, skipping insertion in model container [2021-11-23 02:23:04,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:02" (2/3) ... [2021-11-23 02:23:04,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2d09ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:04, skipping insertion in model container [2021-11-23 02:23:04,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:04" (3/3) ... [2021-11-23 02:23:04,795 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product32.cil.c [2021-11-23 02:23:04,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:23:04,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:23:04,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:23:04,899 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:23:04,936 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:23:04,982 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 02:23:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:23:04,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:23:05,000 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 02:23:05,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:23:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:23:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1548688865, now seen corresponding path program 1 times [2021-11-23 02:23:05,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:23:05,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303634454] [2021-11-23 02:23:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:05,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:23:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:23:05,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:23:05,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303634454] [2021-11-23 02:23:05,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303634454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:23:05,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:23:05,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:23:05,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933530676] [2021-11-23 02:23:05,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:23:05,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:23:05,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:23:05,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:23:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:23:05,565 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 02:23:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:23:05,786 INFO L93 Difference]: Finished difference Result 346 states and 455 transitions. [2021-11-23 02:23:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:23:05,789 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 02:23:05,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:23:05,805 INFO L225 Difference]: With dead ends: 346 [2021-11-23 02:23:05,805 INFO L226 Difference]: Without dead ends: 216 [2021-11-23 02:23:05,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:23:05,817 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:23:05,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:23:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-23 02:23:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-23 02:23:05,894 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 02:23:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2021-11-23 02:23:05,901 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 71 [2021-11-23 02:23:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:23:05,903 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2021-11-23 02:23:05,903 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 02:23:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2021-11-23 02:23:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:23:05,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:23:05,910 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 02:23:05,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:23:05,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:23:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:23:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2058665022, now seen corresponding path program 1 times [2021-11-23 02:23:05,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:23:05,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686150443] [2021-11-23 02:23:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:05,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:23:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:23:06,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:23:06,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686150443] [2021-11-23 02:23:06,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686150443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:23:06,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:23:06,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:23:06,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869702313] [2021-11-23 02:23:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:23:06,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:23:06,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:23:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:23:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:23:06,090 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 02:23:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:23:06,332 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2021-11-23 02:23:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:23:06,333 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 02:23:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:23:06,347 INFO L225 Difference]: With dead ends: 342 [2021-11-23 02:23:06,347 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 02:23:06,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:23:06,357 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:23:06,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:23:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 02:23:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-23 02:23:06,406 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 02:23:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 287 transitions. [2021-11-23 02:23:06,410 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 287 transitions. Word has length 72 [2021-11-23 02:23:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:23:06,411 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 287 transitions. [2021-11-23 02:23:06,411 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 02:23:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 287 transitions. [2021-11-23 02:23:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:23:06,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:23:06,416 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:23:06,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:23:06,416 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:23:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:23:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 523395938, now seen corresponding path program 1 times [2021-11-23 02:23:06,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:23:06,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779958597] [2021-11-23 02:23:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:06,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:23:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:23:06,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:23:06,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779958597] [2021-11-23 02:23:06,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779958597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:23:06,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:23:06,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:23:06,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261575348] [2021-11-23 02:23:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:23:06,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:23:06,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:23:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:23:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:23:06,642 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 02:23:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:23:06,842 INFO L93 Difference]: Finished difference Result 471 states and 641 transitions. [2021-11-23 02:23:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:23:06,843 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 02:23:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:23:06,848 INFO L225 Difference]: With dead ends: 471 [2021-11-23 02:23:06,848 INFO L226 Difference]: Without dead ends: 271 [2021-11-23 02:23:06,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:23:06,858 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 59 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:23:06,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 507 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:23:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-23 02:23:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2021-11-23 02:23:06,913 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 02:23:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2021-11-23 02:23:06,919 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 77 [2021-11-23 02:23:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:23:06,921 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2021-11-23 02:23:06,922 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 02:23:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2021-11-23 02:23:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:23:06,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:23:06,930 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 02:23:06,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:23:06,931 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:23:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:23:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1007181635, now seen corresponding path program 1 times [2021-11-23 02:23:06,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:23:06,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923213503] [2021-11-23 02:23:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:06,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:23:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:07,133 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 02:23:07,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:23:07,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923213503] [2021-11-23 02:23:07,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923213503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:23:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028415539] [2021-11-23 02:23:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:07,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:23:07,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:23:07,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:23:07,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:23:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:07,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:23:07,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:23:07,831 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 02:23:07,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:23:08,153 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 02:23:08,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028415539] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:23:08,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29319687] [2021-11-23 02:23:08,182 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2021-11-23 02:23:08,182 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:23:08,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:23:08,205 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:23:08,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:23:46,051 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 02:23:46,361 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 482 for LOIs [2021-11-23 02:24:19,822 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2021-11-23 02:24:20,070 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:24:20,320 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 480 for LOIs [2021-11-23 02:24:26,773 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 438 for LOIs [2021-11-23 02:24:27,013 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 454 for LOIs [2021-11-23 02:24:32,837 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2021-11-23 02:24:32,913 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 249 for LOIs [2021-11-23 02:24:32,959 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2021-11-23 02:24:33,472 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 257 for LOIs [2021-11-23 02:24:33,527 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:25:05,439 WARN L227 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 490 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:16,711 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 512 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:27,866 WARN L227 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 593 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:35,998 WARN L227 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 564 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:44,282 WARN L227 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 566 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:52,610 WARN L227 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 568 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:00,925 WARN L227 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 564 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:06,516 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 564 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:14,763 WARN L227 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 565 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:35,186 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 547 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:53,309 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 556 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:58,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [29319687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:58,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:27:58,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2021-11-23 02:27:58,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715706980] [2021-11-23 02:27:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:58,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-23 02:27:58,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-23 02:27:58,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=3384, Unknown=0, NotChecked=0, Total=3540 [2021-11-23 02:27:58,028 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 55 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 33 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 02:29:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:04,780 INFO L93 Difference]: Finished difference Result 684 states and 1022 transitions. [2021-11-23 02:29:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-23 02:29:04,781 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 33 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 02:29:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:04,785 INFO L225 Difference]: With dead ends: 684 [2021-11-23 02:29:04,785 INFO L226 Difference]: Without dead ends: 436 [2021-11-23 02:29:04,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 247.8s TimeCoverageRelationStatistics Valid=248, Invalid=5008, Unknown=0, NotChecked=0, Total=5256 [2021-11-23 02:29:04,790 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 387 mSDsluCounter, 7572 mSDsCounter, 0 mSdLazyCounter, 8374 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 7683 SdHoareTripleChecker+Invalid, 8424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 8374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:04,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 7683 Invalid, 8424 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [50 Valid, 8374 Invalid, 0 Unknown, 0 Unchecked, 22.9s Time] [2021-11-23 02:29:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-23 02:29:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 362. [2021-11-23 02:29:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 237 states have (on average 1.40084388185654) internal successors, (332), 241 states have internal predecessors, (332), 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 02:29:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 509 transitions. [2021-11-23 02:29:04,918 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 509 transitions. Word has length 78 [2021-11-23 02:29:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:04,919 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 509 transitions. [2021-11-23 02:29:04,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 33 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 02:29:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 509 transitions. [2021-11-23 02:29:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:29:04,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:04,922 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 02:29:04,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:29:05,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:29:05,136 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash -224052683, now seen corresponding path program 1 times [2021-11-23 02:29:05,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:05,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502426817] [2021-11-23 02:29:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:05,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:05,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:05,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502426817] [2021-11-23 02:29:05,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502426817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:05,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:05,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:05,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989222443] [2021-11-23 02:29:05,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:05,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:05,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:05,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:05,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:05,244 INFO L87 Difference]: Start difference. First operand 362 states and 509 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 02:29:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:05,526 INFO L93 Difference]: Finished difference Result 804 states and 1164 transitions. [2021-11-23 02:29:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:05,527 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 02:29:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:05,531 INFO L225 Difference]: With dead ends: 804 [2021-11-23 02:29:05,532 INFO L226 Difference]: Without dead ends: 479 [2021-11-23 02:29:05,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:05,534 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 57 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:05,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 516 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:29:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-23 02:29:05,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 472. [2021-11-23 02:29:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 316 states have (on average 1.4367088607594938) internal successors, (454), 320 states have internal predecessors, (454), 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 02:29:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 693 transitions. [2021-11-23 02:29:05,713 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 693 transitions. Word has length 83 [2021-11-23 02:29:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:05,714 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 693 transitions. [2021-11-23 02:29:05,714 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 02:29:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 693 transitions. [2021-11-23 02:29:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 02:29:05,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:05,723 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 02:29:05,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:29:05,724 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:05,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2120714797, now seen corresponding path program 1 times [2021-11-23 02:29:05,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:05,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753849553] [2021-11-23 02:29:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:05,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:05,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753849553] [2021-11-23 02:29:05,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753849553] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:29:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982693709] [2021-11-23 02:29:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:05,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:29:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:29:05,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:29:05,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4a4f9d-78ab-42c1-a2e2-dc6ef63160e6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:29:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:06,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:29:06,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:29:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:06,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:29:06,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982693709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:29:06,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1605483604] [2021-11-23 02:29:06,511 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2021-11-23 02:29:06,511 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:29:06,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:29:06,512 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:29:06,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:29:38,650 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:29:38,902 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 269 for LOIs [2021-11-23 02:29:40,628 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 02:29:40,670 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2021-11-23 02:29:40,916 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2021-11-23 02:29:43,755 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 227 for LOIs [2021-11-23 02:29:43,795 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 279 for LOIs [2021-11-23 02:29:49,525 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2021-11-23 02:29:49,599 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2021-11-23 02:29:49,643 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 479 for LOIs [2021-11-23 02:29:51,147 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2021-11-23 02:29:51,199 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:30:23,751 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 490 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:35,162 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 512 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:45,473 WARN L227 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:05,928 WARN L227 SmtUtils]: Spent 18.98s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:26,198 WARN L227 SmtUtils]: Spent 18.87s on a formula simplification. DAG size of input: 588 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:45,532 WARN L227 SmtUtils]: Spent 18.86s on a formula simplification. DAG size of input: 586 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:56,552 WARN L227 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 585 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:06,911 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 572 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:16,848 WARN L227 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 479 DAG size of output: 279 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:14,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1605483604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:14,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:33:14,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2021-11-23 02:33:14,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475143477] [2021-11-23 02:33:14,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:14,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-23 02:33:14,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-23 02:33:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=3745, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 02:33:14,260 INFO L87 Difference]: Start difference. First operand 472 states and 693 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 02:33:38,620 WARN L227 SmtUtils]: Spent 17.93s on a formula simplification. DAG size of input: 500 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:56,197 WARN L227 SmtUtils]: Spent 17.09s on a formula simplification. DAG size of input: 500 DAG size of output: 456 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:13,711 WARN L227 SmtUtils]: Spent 16.99s on a formula simplification. DAG size of input: 498 DAG size of output: 454 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)