./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product10.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_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/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_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/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_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/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 c9a35f77051831a79054d5620e487d68dd21285b0cc9c8ae29c469f997bd1ec7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:15:57,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:15:57,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:15:57,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:15:57,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:15:57,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:15:57,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:15:57,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:15:57,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:15:57,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:15:57,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:15:57,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:15:57,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:15:57,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:15:57,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:15:57,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:15:57,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:15:57,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:15:57,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:15:57,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:15:57,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:15:57,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:15:57,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:15:57,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:15:58,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:15:58,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:15:58,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:15:58,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:15:58,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:15:58,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:15:58,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:15:58,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:15:58,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:15:58,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:15:58,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:15:58,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:15:58,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:15:58,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:15:58,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:15:58,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:15:58,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:15:58,021 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:15:58,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:15:58,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:15:58,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:15:58,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:15:58,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:15:58,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:15:58,068 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:15:58,069 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:15:58,069 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:15:58,069 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:15:58,071 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:15:58,071 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:15:58,072 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:15:58,072 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:15:58,072 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:15:58,073 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:15:58,073 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:15:58,073 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:15:58,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:15:58,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:15:58,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:15:58,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:15:58,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:15:58,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:15:58,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:15:58,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:15:58,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:15:58,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:15:58,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:15:58,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:15:58,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:15:58,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:15:58,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:15:58,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:15:58,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:15:58,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:15:58,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:15:58,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:15:58,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:15:58,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:15:58,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:15:58,084 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_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9a35f77051831a79054d5620e487d68dd21285b0cc9c8ae29c469f997bd1ec7 [2021-11-23 03:15:58,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:15:58,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:15:58,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:15:58,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:15:58,456 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:15:58,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product10.cil.c [2021-11-23 03:15:58,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/data/6ffe33327/1f98449f99c6408794b2c41f6528acdc/FLAG45ea07937 [2021-11-23 03:15:59,342 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:15:59,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/sv-benchmarks/c/product-lines/email_spec11_product10.cil.c [2021-11-23 03:15:59,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/data/6ffe33327/1f98449f99c6408794b2c41f6528acdc/FLAG45ea07937 [2021-11-23 03:15:59,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/data/6ffe33327/1f98449f99c6408794b2c41f6528acdc [2021-11-23 03:15:59,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:15:59,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:15:59,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:15:59,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:15:59,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:15:59,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:59" (1/1) ... [2021-11-23 03:15:59,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfa1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:59, skipping insertion in model container [2021-11-23 03:15:59,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:59" (1/1) ... [2021-11-23 03:15:59,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:15:59,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:16:00,307 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_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/sv-benchmarks/c/product-lines/email_spec11_product10.cil.c[53446,53459] [2021-11-23 03:16:00,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:00,358 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:16:00,527 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_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/sv-benchmarks/c/product-lines/email_spec11_product10.cil.c[53446,53459] [2021-11-23 03:16:00,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:00,583 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:16:00,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00 WrapperNode [2021-11-23 03:16:00,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:16:00,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:16:00,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:16:00,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:16:00,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,716 INFO L137 Inliner]: procedures = 110, calls = 135, calls flagged for inlining = 40, calls inlined = 33, statements flattened = 620 [2021-11-23 03:16:00,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:16:00,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:16:00,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:16:00,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:16:00,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:16:00,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:16:00,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:16:00,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:16:00,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (1/1) ... [2021-11-23 03:16:00,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:16:00,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:16:00,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:16:00,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:16:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:16:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:16:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:16:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:16:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:16:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:16:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:16:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:16:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:16:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 03:16:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 03:16:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:16:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:16:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:16:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:16:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:16:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:16:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:16:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:16:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:16:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:16:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:16:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:16:01,263 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:16:01,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:16:01,963 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:16:02,160 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:16:02,161 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:16:02,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:02 BoogieIcfgContainer [2021-11-23 03:16:02,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:16:02,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:16:02,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:16:02,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:16:02,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:15:59" (1/3) ... [2021-11-23 03:16:02,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de57dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:02, skipping insertion in model container [2021-11-23 03:16:02,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:00" (2/3) ... [2021-11-23 03:16:02,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de57dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:02, skipping insertion in model container [2021-11-23 03:16:02,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:02" (3/3) ... [2021-11-23 03:16:02,175 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product10.cil.c [2021-11-23 03:16:02,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:16:02,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:16:02,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:16:02,264 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:16:02,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:16:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 64 states have internal predecessors, (92), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 03:16:02,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:16:02,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:16:02,299 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:16:02,299 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:16:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:16:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash -144883800, now seen corresponding path program 1 times [2021-11-23 03:16:02,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:16:02,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840168629] [2021-11-23 03:16:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:02,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:16:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:16:02,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:16:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840168629] [2021-11-23 03:16:02,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840168629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:16:02,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:16:02,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:16:02,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163901296] [2021-11-23 03:16:02,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:16:02,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:16:02,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:16:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:16:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:16:02,843 INFO L87 Difference]: Start difference. First operand has 92 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 64 states have internal predecessors, (92), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:16:03,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:16:03,008 INFO L93 Difference]: Finished difference Result 150 states and 202 transitions. [2021-11-23 03:16:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:16:03,012 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2021-11-23 03:16:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:16:03,034 INFO L225 Difference]: With dead ends: 150 [2021-11-23 03:16:03,035 INFO L226 Difference]: Without dead ends: 89 [2021-11-23 03:16:03,043 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 03:16:03,049 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:16:03,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:16:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-23 03:16:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-23 03:16:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 61 states have internal predecessors, (86), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 03:16:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2021-11-23 03:16:03,128 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 42 [2021-11-23 03:16:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:16:03,130 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2021-11-23 03:16:03,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:16:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2021-11-23 03:16:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 03:16:03,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:16:03,135 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:16:03,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:16:03,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:16:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:16:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash 689599262, now seen corresponding path program 1 times [2021-11-23 03:16:03,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:16:03,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059563727] [2021-11-23 03:16:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:03,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:16:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:16:03,354 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:16:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059563727] [2021-11-23 03:16:03,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059563727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:16:03,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:16:03,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:16:03,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616198557] [2021-11-23 03:16:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:16:03,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:16:03,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:16:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:16:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:16:03,360 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:16:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:16:03,472 INFO L93 Difference]: Finished difference Result 146 states and 190 transitions. [2021-11-23 03:16:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:16:03,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2021-11-23 03:16:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:16:03,481 INFO L225 Difference]: With dead ends: 146 [2021-11-23 03:16:03,481 INFO L226 Difference]: Without dead ends: 91 [2021-11-23 03:16:03,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:16:03,485 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:16:03,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:16:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-23 03:16:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-11-23 03:16:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 03:16:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2021-11-23 03:16:03,506 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 43 [2021-11-23 03:16:03,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:16:03,506 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2021-11-23 03:16:03,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:16:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2021-11-23 03:16:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:16:03,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:16:03,510 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:16:03,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:16:03,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:16:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:16:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash 46987416, now seen corresponding path program 1 times [2021-11-23 03:16:03,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:16:03,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134056715] [2021-11-23 03:16:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:03,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:16:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:16:03,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:16:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134056715] [2021-11-23 03:16:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134056715] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:16:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033217384] [2021-11-23 03:16:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:03,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:16:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:16:03,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:16:03,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:16:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:04,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:16:04,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:16:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:16:04,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:16:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:16:04,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033217384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:16:04,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333467874] [2021-11-23 03:16:04,474 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2021-11-23 03:16:04,474 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:16:04,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:16:04,487 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:16:04,487 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:16:15,441 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2021-11-23 03:16:15,846 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:16:48,880 WARN L227 SmtUtils]: Spent 13.54s on a formula simplification. DAG size of input: 573 DAG size of output: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:14,377 WARN L227 SmtUtils]: Spent 24.01s on a formula simplification. DAG size of input: 575 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:15,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1333467874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:15,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:17:15,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2021-11-23 03:17:15,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137349988] [2021-11-23 03:17:15,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:15,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:17:15,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:17:15,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:17:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:17:15,603 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-23 03:17:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:22,058 INFO L93 Difference]: Finished difference Result 244 states and 379 transitions. [2021-11-23 03:17:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:17:22,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 47 [2021-11-23 03:17:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:22,064 INFO L225 Difference]: With dead ends: 244 [2021-11-23 03:17:22,064 INFO L226 Difference]: Without dead ends: 165 [2021-11-23 03:17:22,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 59.8s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:17:22,070 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 98 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:22,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 1352 Invalid, 806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 03:17:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-23 03:17:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 112. [2021-11-23 03:17:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 84 states have internal predecessors, (120), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 03:17:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 157 transitions. [2021-11-23 03:17:22,144 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 157 transitions. Word has length 47 [2021-11-23 03:17:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:22,145 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 157 transitions. [2021-11-23 03:17:22,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-23 03:17:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 157 transitions. [2021-11-23 03:17:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 03:17:22,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:22,148 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:17:22,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:22,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:17:22,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:17:22,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:22,363 INFO L85 PathProgramCache]: Analyzing trace with hash -394875217, now seen corresponding path program 1 times [2021-11-23 03:17:22,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:17:22,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350221185] [2021-11-23 03:17:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:22,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:17:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:17:22,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:17:22,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350221185] [2021-11-23 03:17:22,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350221185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:22,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:22,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:17:22,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454288277] [2021-11-23 03:17:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:22,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:17:22,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:17:22,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:17:22,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:17:22,483 INFO L87 Difference]: Start difference. First operand 112 states and 157 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:17:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:22,648 INFO L93 Difference]: Finished difference Result 260 states and 379 transitions. [2021-11-23 03:17:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:17:22,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2021-11-23 03:17:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:22,651 INFO L225 Difference]: With dead ends: 260 [2021-11-23 03:17:22,652 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 03:17:22,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:17:22,655 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 46 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:22,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 200 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:17:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 03:17:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2021-11-23 03:17:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 128 states have (on average 1.5234375) internal successors, (195), 129 states have internal predecessors, (195), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 03:17:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 232 transitions. [2021-11-23 03:17:22,750 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 232 transitions. Word has length 48 [2021-11-23 03:17:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:22,751 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 232 transitions. [2021-11-23 03:17:22,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:17:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 232 transitions. [2021-11-23 03:17:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 03:17:22,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:22,754 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:17:22,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:17:22,755 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:17:22,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash 942691457, now seen corresponding path program 1 times [2021-11-23 03:17:22,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:17:22,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490012027] [2021-11-23 03:17:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:22,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:17:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:17:22,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:17:22,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490012027] [2021-11-23 03:17:22,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490012027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:17:22,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710177904] [2021-11-23 03:17:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:22,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:17:22,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:17:22,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:17:22,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:17:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:23,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:17:23,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:17:23,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:17:23,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710177904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:17:23,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899950851] [2021-11-23 03:17:23,345 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-23 03:17:23,345 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:17:23,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:17:23,346 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:17:23,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:17:39,838 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2021-11-23 03:17:40,176 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 466 for LOIs [2021-11-23 03:18:03,480 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 456 for LOIs [2021-11-23 03:18:03,811 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 464 for LOIs [2021-11-23 03:18:16,544 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 446 for LOIs [2021-11-23 03:18:16,827 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2021-11-23 03:18:16,882 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 239 for LOIs [2021-11-23 03:18:17,026 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:18:57,570 WARN L227 SmtUtils]: Spent 21.73s on a formula simplification. DAG size of input: 585 DAG size of output: 453 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:13,802 WARN L227 SmtUtils]: Spent 14.72s on a formula simplification. DAG size of input: 587 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:30,273 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 555 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:52,719 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 508 DAG size of output: 304 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:07,535 WARN L227 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 504 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:31,242 WARN L227 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 506 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:40,529 WARN L227 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 570 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:50,384 WARN L227 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 592 DAG size of output: 456 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:02,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1899950851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:21:02,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:21:02,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [4, 4, 4] total 44 [2021-11-23 03:21:02,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731255414] [2021-11-23 03:21:02,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:21:02,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 03:21:02,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:21:02,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 03:21:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1774, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 03:21:02,974 INFO L87 Difference]: Start difference. First operand 157 states and 232 transitions. Second operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:21:13,245 WARN L227 SmtUtils]: Spent 9.18s on a formula simplification. DAG size of input: 568 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:34,093 WARN L227 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 575 DAG size of output: 446 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:44,505 WARN L227 SmtUtils]: Spent 9.91s on a formula simplification. DAG size of input: 585 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:21:54,705 WARN L227 SmtUtils]: Spent 9.91s on a formula simplification. DAG size of input: 577 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:07,590 WARN L227 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 614 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:16,227 WARN L227 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 614 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:22:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:18,050 INFO L93 Difference]: Finished difference Result 410 states and 646 transitions. [2021-11-23 03:22:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 03:22:18,053 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2021-11-23 03:22:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:18,057 INFO L225 Difference]: With dead ends: 410 [2021-11-23 03:22:18,058 INFO L226 Difference]: Without dead ends: 308 [2021-11-23 03:22:18,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 233.0s TimeCoverageRelationStatistics Valid=200, Invalid=2662, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 03:22:18,061 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 250 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:18,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 2049 Invalid, 2277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-23 03:22:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-23 03:22:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 258. [2021-11-23 03:22:18,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 217 states have (on average 1.5852534562211982) internal successors, (344), 219 states have internal predecessors, (344), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (26), 23 states have call predecessors, (26), 25 states have call successors, (26) [2021-11-23 03:22:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 396 transitions. [2021-11-23 03:22:18,256 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 396 transitions. Word has length 49 [2021-11-23 03:22:18,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:18,257 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 396 transitions. [2021-11-23 03:22:18,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.08) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:22:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 396 transitions. [2021-11-23 03:22:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 03:22:18,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:18,262 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] [2021-11-23 03:22:18,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:22:18,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:22:18,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash 314475893, now seen corresponding path program 1 times [2021-11-23 03:22:18,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:18,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828327491] [2021-11-23 03:22:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:18,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:22:18,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828327491] [2021-11-23 03:22:18,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828327491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:22:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387671937] [2021-11-23 03:22:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:18,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:22:18,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:22:18,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:22:18,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:22:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:18,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:22:18,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:22:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:22:19,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:22:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:22:19,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387671937] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:22:19,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906588091] [2021-11-23 03:22:19,223 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-23 03:22:19,223 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:22:19,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:22:19,224 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:22:19,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:22:36,953 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2021-11-23 03:22:37,280 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 466 for LOIs [2021-11-23 03:23:00,048 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 456 for LOIs [2021-11-23 03:23:00,378 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 464 for LOIs [2021-11-23 03:23:07,660 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2021-11-23 03:23:07,709 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2021-11-23 03:23:07,765 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 455 for LOIs [2021-11-23 03:23:08,495 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:23:37,114 WARN L227 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 557 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:23:44,496 WARN L227 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 559 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:23:53,203 WARN L227 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 561 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:01,344 WARN L227 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 556 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:09,184 WARN L227 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 553 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:15,817 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 466 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:21,822 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 480 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:27,723 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 455 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:33,727 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 470 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:40,142 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 508 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:24:53,511 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 504 DAG size of output: 289 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:25:04,047 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 464 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:25:10,398 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 503 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:25:20,895 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 505 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:25:27,931 WARN L227 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 565 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:25:37,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1906588091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:37,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:25:37,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [6, 5, 5] total 47 [2021-11-23 03:25:37,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786438090] [2021-11-23 03:25:37,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:37,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 03:25:37,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:37,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 03:25:37,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 03:25:37,072 INFO L87 Difference]: Start difference. First operand 258 states and 396 transitions. Second operand has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:26:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:18,087 INFO L93 Difference]: Finished difference Result 676 states and 1088 transitions. [2021-11-23 03:26:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 03:26:18,088 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 52 [2021-11-23 03:26:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:18,094 INFO L225 Difference]: With dead ends: 676 [2021-11-23 03:26:18,094 INFO L226 Difference]: Without dead ends: 440 [2021-11-23 03:26:18,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 180.9s TimeCoverageRelationStatistics Valid=209, Invalid=2871, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 03:26:18,097 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 212 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:18,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 2474 Invalid, 3153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 03:26:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-23 03:26:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 263. [2021-11-23 03:26:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 222 states have (on average 1.5765765765765767) internal successors, (350), 224 states have internal predecessors, (350), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (26), 23 states have call predecessors, (26), 25 states have call successors, (26) [2021-11-23 03:26:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 402 transitions. [2021-11-23 03:26:18,257 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 402 transitions. Word has length 52 [2021-11-23 03:26:18,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:18,258 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 402 transitions. [2021-11-23 03:26:18,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:26:18,259 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 402 transitions. [2021-11-23 03:26:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 03:26:18,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:18,261 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2021-11-23 03:26:18,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:18,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeb2bbd5-7edc-4efc-946c-bf6b76eea17c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 03:26:18,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1215413347, now seen corresponding path program 1 times [2021-11-23 03:26:18,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:18,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973205143] [2021-11-23 03:26:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:18,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:26:18,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:18,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973205143] [2021-11-23 03:26:18,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973205143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:26:18,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:26:18,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:26:18,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782969558] [2021-11-23 03:26:18,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:26:18,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:26:18,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:26:18,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:26:18,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:26:18,576 INFO L87 Difference]: Start difference. First operand 263 states and 402 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-23 03:26:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:18,865 INFO L93 Difference]: Finished difference Result 277 states and 423 transitions. [2021-11-23 03:26:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:26:18,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 57 [2021-11-23 03:26:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:18,867 INFO L225 Difference]: With dead ends: 277 [2021-11-23 03:26:18,867 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:26:18,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:26:18,869 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 13 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:18,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 437 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:26:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:26:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:26:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:26:18,872 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-11-23 03:26:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:18,872 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:26:18,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-23 03:26:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:26:18,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:26:18,876 INFO L764 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:26:18,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:26:18,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:26:26,515 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 693 DAG size of output: 557 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:26:32,963 WARN L227 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 651 DAG size of output: 538 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:26:39,421 WARN L227 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 653 DAG size of output: 532 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:26:46,353 WARN L227 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 699 DAG size of output: 550 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:26:52,967 WARN L227 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 667 DAG size of output: 535 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:27:01,693 WARN L227 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 751 DAG size of output: 548 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)