./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product31.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_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/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_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/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_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/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 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:58:16,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:58:16,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:58:16,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:58:16,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:58:16,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:58:16,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:58:16,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:58:16,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:58:16,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:58:16,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:58:16,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:58:16,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:58:16,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:58:16,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:58:16,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:58:16,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:58:16,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:58:16,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:58:16,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:58:16,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:58:16,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:58:16,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:58:16,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:58:16,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:58:16,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:58:16,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:58:16,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:58:16,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:58:16,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:58:16,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:58:16,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:58:16,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:58:16,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:58:16,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:58:16,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:58:16,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:58:16,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:58:16,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:58:16,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:58:16,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:58:16,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:58:16,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:58:16,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:58:16,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:58:16,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:58:16,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:58:16,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:58:16,989 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:58:16,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:58:16,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:58:16,990 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:58:16,990 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:58:16,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:58:16,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:58:16,991 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:58:16,991 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:58:16,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:58:16,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:58:16,992 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:58:16,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:58:16,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:58:16,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:58:16,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:58:16,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:58:16,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:58:16,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:58:16,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:58:16,995 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:58:16,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:58:16,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:58:16,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:58:16,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:58:16,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:58:16,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:58:16,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:58:16,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:58:16,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:58:16,998 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:58:16,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:58:16,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:58:16,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:58:16,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:58:16,999 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_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 [2021-11-23 01:58:17,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:58:17,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:58:17,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:58:17,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:58:17,400 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:58:17,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2021-11-23 01:58:17,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/data/566ea5b28/072a1ed225494c9faaf806207163d071/FLAG62e70edf0 [2021-11-23 01:58:18,350 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:58:18,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2021-11-23 01:58:18,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/data/566ea5b28/072a1ed225494c9faaf806207163d071/FLAG62e70edf0 [2021-11-23 01:58:18,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/data/566ea5b28/072a1ed225494c9faaf806207163d071 [2021-11-23 01:58:18,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:58:18,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:58:18,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:58:18,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:58:18,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:58:18,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:18" (1/1) ... [2021-11-23 01:58:18,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca6f9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:18, skipping insertion in model container [2021-11-23 01:58:18,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:18" (1/1) ... [2021-11-23 01:58:18,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:58:18,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:58:19,000 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_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2021-11-23 01:58:19,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:58:19,411 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:58:19,439 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_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2021-11-23 01:58:19,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:58:19,609 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:58:19,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19 WrapperNode [2021-11-23 01:58:19,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:58:19,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:58:19,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:58:19,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:58:19,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,767 INFO L137 Inliner]: procedures = 131, calls = 215, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1005 [2021-11-23 01:58:19,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:58:19,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:58:19,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:58:19,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:58:19,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:58:19,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:58:19,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:58:19,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:58:19,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (1/1) ... [2021-11-23 01:58:19,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:58:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:58:19,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:58:19,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:58:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 01:58:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 01:58:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 01:58:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 01:58:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 01:58:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 01:58:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 01:58:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 01:58:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 01:58:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 01:58:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 01:58:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 01:58:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 01:58:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 01:58:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 01:58:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 01:58:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 01:58:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 01:58:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 01:58:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 01:58:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 01:58:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 01:58:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 01:58:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 01:58:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 01:58:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:58:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 01:58:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 01:58:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 01:58:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 01:58:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 01:58:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 01:58:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 01:58:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 01:58:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 01:58:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 01:58:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 01:58:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 01:58:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 01:58:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 01:58:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 01:58:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 01:58:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 01:58:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 01:58:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 01:58:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 01:58:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:58:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 01:58:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 01:58:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:58:20,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:58:20,454 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:58:20,457 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:58:21,355 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:58:21,829 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:58:21,829 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:58:21,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:21 BoogieIcfgContainer [2021-11-23 01:58:21,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:58:21,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:58:21,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:58:21,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:58:21,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:18" (1/3) ... [2021-11-23 01:58:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402915ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:21, skipping insertion in model container [2021-11-23 01:58:21,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:19" (2/3) ... [2021-11-23 01:58:21,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402915ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:21, skipping insertion in model container [2021-11-23 01:58:21,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:21" (3/3) ... [2021-11-23 01:58:21,845 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2021-11-23 01:58:21,852 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:58:21,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:58:21,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:58:21,922 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:58:21,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:58:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 119 states have internal predecessors, (151), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-23 01:58:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 01:58:21,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:21,971 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:58:21,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1450133937, now seen corresponding path program 1 times [2021-11-23 01:58:21,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:21,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431548410] [2021-11-23 01:58:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:21,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:22,568 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 01:58:22,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:22,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431548410] [2021-11-23 01:58:22,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431548410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:22,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:22,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:58:22,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771014706] [2021-11-23 01:58:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:22,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:58:22,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:58:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:58:22,631 INFO L87 Difference]: Start difference. First operand has 198 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 119 states have internal predecessors, (151), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 01:58:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:22,850 INFO L93 Difference]: Finished difference Result 313 states and 412 transitions. [2021-11-23 01:58:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:58:22,854 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2021-11-23 01:58:22,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:22,875 INFO L225 Difference]: With dead ends: 313 [2021-11-23 01:58:22,875 INFO L226 Difference]: Without dead ends: 195 [2021-11-23 01:58:22,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:58:22,892 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:22,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:58:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-23 01:58:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-23 01:58:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 116 states have internal predecessors, (145), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-23 01:58:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 260 transitions. [2021-11-23 01:58:22,978 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 260 transitions. Word has length 77 [2021-11-23 01:58:22,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:22,980 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 260 transitions. [2021-11-23 01:58:22,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 01:58:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 260 transitions. [2021-11-23 01:58:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 01:58:22,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:22,987 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:58:22,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:58:22,988 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash 366795396, now seen corresponding path program 1 times [2021-11-23 01:58:22,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707053596] [2021-11-23 01:58:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:22,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:23,174 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 01:58:23,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:23,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707053596] [2021-11-23 01:58:23,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707053596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:23,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:23,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:58:23,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712208812] [2021-11-23 01:58:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:23,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:58:23,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:58:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:58:23,182 INFO L87 Difference]: Start difference. First operand 195 states and 260 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 01:58:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:23,455 INFO L93 Difference]: Finished difference Result 309 states and 400 transitions. [2021-11-23 01:58:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:58:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2021-11-23 01:58:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:23,461 INFO L225 Difference]: With dead ends: 309 [2021-11-23 01:58:23,462 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 01:58:23,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:58:23,465 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:23,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:58:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 01:58:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-23 01:58:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 118 states have internal predecessors, (147), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-23 01:58:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 262 transitions. [2021-11-23 01:58:23,522 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 262 transitions. Word has length 78 [2021-11-23 01:58:23,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:23,523 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 262 transitions. [2021-11-23 01:58:23,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 01:58:23,524 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 262 transitions. [2021-11-23 01:58:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 01:58:23,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:23,527 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:58:23,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:58:23,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash -720933932, now seen corresponding path program 1 times [2021-11-23 01:58:23,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:23,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523834015] [2021-11-23 01:58:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:23,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 01:58:23,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:23,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523834015] [2021-11-23 01:58:23,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523834015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:23,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:23,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:58:23,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997821816] [2021-11-23 01:58:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:23,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:58:23,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:58:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:58:23,642 INFO L87 Difference]: Start difference. First operand 197 states and 262 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 01:58:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:23,783 INFO L93 Difference]: Finished difference Result 424 states and 583 transitions. [2021-11-23 01:58:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:58:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2021-11-23 01:58:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:23,792 INFO L225 Difference]: With dead ends: 424 [2021-11-23 01:58:23,792 INFO L226 Difference]: Without dead ends: 245 [2021-11-23 01:58:23,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:58:23,802 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 57 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:23,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 455 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:58:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-23 01:58:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2021-11-23 01:58:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 150 states have internal predecessors, (200), 69 states have call successors, (69), 23 states have call predecessors, (69), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-23 01:58:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 337 transitions. [2021-11-23 01:58:23,861 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 337 transitions. Word has length 83 [2021-11-23 01:58:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:23,863 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 337 transitions. [2021-11-23 01:58:23,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 01:58:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 337 transitions. [2021-11-23 01:58:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 01:58:23,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:23,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:58:23,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:58:23,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1953894951, now seen corresponding path program 1 times [2021-11-23 01:58:23,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:23,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098943965] [2021-11-23 01:58:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:23,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 01:58:24,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:24,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098943965] [2021-11-23 01:58:24,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098943965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:58:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116454481] [2021-11-23 01:58:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:24,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:58:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:58:24,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:58:24,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:58:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:24,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:58:24,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:58:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 01:58:24,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:58:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 01:58:24,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116454481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:58:24,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [365671710] [2021-11-23 01:58:25,013 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-23 01:58:25,014 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:58:25,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:58:25,031 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:58:25,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:58:49,896 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 01:58:50,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 01:58:50,545 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:59:46,616 WARN L227 SmtUtils]: Spent 13.00s on a formula simplification. DAG size of input: 581 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:01,910 WARN L227 SmtUtils]: Spent 13.83s on a formula simplification. DAG size of input: 583 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:10,525 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 568 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:18,993 WARN L227 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 564 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:24,833 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 564 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:24,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [365671710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:24,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:00:24,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:00:24,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335821904] [2021-11-23 02:00:24,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:24,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:00:24,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:00:24,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:00:24,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:00:24,850 INFO L87 Difference]: Start difference. First operand 240 states and 337 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:00:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:33,523 INFO L93 Difference]: Finished difference Result 559 states and 835 transitions. [2021-11-23 02:00:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:00:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2021-11-23 02:00:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:33,530 INFO L225 Difference]: With dead ends: 559 [2021-11-23 02:00:33,531 INFO L226 Difference]: Without dead ends: 337 [2021-11-23 02:00:33,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 94.3s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:00:33,536 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 137 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:33,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 3665 Invalid, 2086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 02:00:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-23 02:00:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 263. [2021-11-23 02:00:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 169 states have (on average 1.378698224852071) internal successors, (233), 172 states have internal predecessors, (233), 69 states have call successors, (69), 24 states have call predecessors, (69), 24 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-23 02:00:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 370 transitions. [2021-11-23 02:00:33,644 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 370 transitions. Word has length 84 [2021-11-23 02:00:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:33,644 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 370 transitions. [2021-11-23 02:00:33,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:00:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 370 transitions. [2021-11-23 02:00:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 02:00:33,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:33,647 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:33,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:33,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:00:33,868 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:00:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:33,869 INFO L85 PathProgramCache]: Analyzing trace with hash 203216646, now seen corresponding path program 1 times [2021-11-23 02:00:33,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:00:33,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741325710] [2021-11-23 02:00:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:33,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:00:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:00:33,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:00:33,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741325710] [2021-11-23 02:00:33,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741325710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:33,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:33,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:00:33,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174560702] [2021-11-23 02:00:33,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:33,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:00:33,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:00:33,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:00:33,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:00:33,970 INFO L87 Difference]: Start difference. First operand 263 states and 370 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:00:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:34,190 INFO L93 Difference]: Finished difference Result 619 states and 904 transitions. [2021-11-23 02:00:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:00:34,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2021-11-23 02:00:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:34,194 INFO L225 Difference]: With dead ends: 619 [2021-11-23 02:00:34,195 INFO L226 Difference]: Without dead ends: 380 [2021-11-23 02:00:34,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:00:34,197 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 55 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:34,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 468 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:00:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-23 02:00:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 375. [2021-11-23 02:00:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 256 states have (on average 1.44140625) internal successors, (369), 259 states have internal predecessors, (369), 94 states have call successors, (94), 24 states have call predecessors, (94), 24 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-23 02:00:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 556 transitions. [2021-11-23 02:00:34,327 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 556 transitions. Word has length 89 [2021-11-23 02:00:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 556 transitions. [2021-11-23 02:00:34,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:00:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 556 transitions. [2021-11-23 02:00:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 02:00:34,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:34,331 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:34,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:00:34,332 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:00:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1480359538, now seen corresponding path program 1 times [2021-11-23 02:00:34,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:00:34,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214509152] [2021-11-23 02:00:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:34,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:00:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:00:34,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:00:34,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214509152] [2021-11-23 02:00:34,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214509152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:00:34,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152103934] [2021-11-23 02:00:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:34,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:00:34,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:00:34,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:00:34,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:00:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:34,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:00:34,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:00:34,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:00:35,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152103934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:00:35,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [250119736] [2021-11-23 02:00:35,043 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2021-11-23 02:00:35,043 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:00:35,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:00:35,044 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:00:35,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:01:15,777 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 02:01:16,027 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2021-11-23 02:01:16,287 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:01:46,621 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:05,972 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:26,808 WARN L227 SmtUtils]: Spent 19.33s on a formula simplification. DAG size of input: 589 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:43,752 WARN L227 SmtUtils]: Spent 15.18s on a formula simplification. DAG size of input: 591 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:14,584 WARN L227 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 549 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:20,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [250119736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:03:20,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:03:20,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:03:20,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638050858] [2021-11-23 02:03:20,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:03:20,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:03:20,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:03:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:03:20,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:03:20,070 INFO L87 Difference]: Start difference. First operand 375 states and 556 transitions. Second operand has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-23 02:03:39,901 WARN L227 SmtUtils]: Spent 18.49s on a formula simplification. DAG size of input: 537 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:08,311 WARN L227 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 574 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:19,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:04:19,064 INFO L93 Difference]: Finished difference Result 845 states and 1312 transitions. [2021-11-23 02:04:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:04:19,064 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 90 [2021-11-23 02:04:19,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:04:19,069 INFO L225 Difference]: With dead ends: 845 [2021-11-23 02:04:19,069 INFO L226 Difference]: Without dead ends: 533 [2021-11-23 02:04:19,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 174.0s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:04:19,073 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 302 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:04:19,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3615 Invalid, 2397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-23 02:04:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-23 02:04:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 437. [2021-11-23 02:04:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 314 states have (on average 1.4904458598726114) internal successors, (468), 319 states have internal predecessors, (468), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-23 02:04:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 661 transitions. [2021-11-23 02:04:19,245 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 661 transitions. Word has length 90 [2021-11-23 02:04:19,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:04:19,245 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 661 transitions. [2021-11-23 02:04:19,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-23 02:04:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 661 transitions. [2021-11-23 02:04:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 02:04:19,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:04:19,249 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:04:19,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:04:19,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:19,464 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:04:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:04:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1468419200, now seen corresponding path program 1 times [2021-11-23 02:04:19,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:04:19,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328156021] [2021-11-23 02:04:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:19,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:04:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:04:19,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:04:19,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328156021] [2021-11-23 02:04:19,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328156021] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:04:19,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39114738] [2021-11-23 02:04:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:19,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:19,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:04:19,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:04:19,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:04:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:19,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:04:19,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:04:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:04:20,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:04:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:04:20,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39114738] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:04:20,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2140833931] [2021-11-23 02:04:20,311 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2021-11-23 02:04:20,311 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:04:20,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:04:20,313 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:04:20,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:06:03,684 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 02:06:03,950 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2021-11-23 02:06:04,233 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2021-11-23 02:06:04,522 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 447 for LOIs [2021-11-23 02:06:04,652 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:06:04,908 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:06:21,816 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:35,008 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:48,546 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 498 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:54,994 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:10,829 WARN L227 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 543 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:18,842 WARN L227 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 545 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:47,744 WARN L227 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 541 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:01,094 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 522 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:01,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2140833931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:01,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:08:01,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2021-11-23 02:08:01,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089806534] [2021-11-23 02:08:01,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:01,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 02:08:01,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:01,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 02:08:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 02:08:01,099 INFO L87 Difference]: Start difference. First operand 437 states and 661 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2021-11-23 02:08:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:17,050 INFO L93 Difference]: Finished difference Result 908 states and 1415 transitions. [2021-11-23 02:08:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:08:17,051 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 93 [2021-11-23 02:08:17,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:17,055 INFO L225 Difference]: With dead ends: 908 [2021-11-23 02:08:17,055 INFO L226 Difference]: Without dead ends: 596 [2021-11-23 02:08:17,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 122.9s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 02:08:17,058 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 144 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:17,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 4359 Invalid, 3379 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3360 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 02:08:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-23 02:08:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 522. [2021-11-23 02:08:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 391 states have (on average 1.5166240409207161) internal successors, (593), 398 states have internal predecessors, (593), 102 states have call successors, (102), 28 states have call predecessors, (102), 28 states have return successors, (101), 97 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-23 02:08:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 796 transitions. [2021-11-23 02:08:17,266 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 796 transitions. Word has length 93 [2021-11-23 02:08:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:17,266 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 796 transitions. [2021-11-23 02:08:17,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2021-11-23 02:08:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 796 transitions. [2021-11-23 02:08:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 02:08:17,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:17,270 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:17,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:17,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:08:17,484 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1953297325, now seen corresponding path program 1 times [2021-11-23 02:08:17,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:17,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024188059] [2021-11-23 02:08:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:17,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:08:17,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:17,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024188059] [2021-11-23 02:08:17,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024188059] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:08:17,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438206951] [2021-11-23 02:08:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:17,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:17,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:17,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:17,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e2e5f08-4655-4f6e-aaf5-09a6b2907352/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:08:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:08:17,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:08:17,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:08:18,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438206951] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:18,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [464121870] [2021-11-23 02:08:18,160 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2021-11-23 02:08:18,160 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:18,161 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:18,161 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:18,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:08:56,770 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:08:57,021 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:08:57,267 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 478 for LOIs [2021-11-23 02:09:24,091 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 448 for LOIs [2021-11-23 02:09:24,368 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 476 for LOIs [2021-11-23 02:09:49,087 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2021-11-23 02:09:49,812 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2021-11-23 02:09:49,864 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 437 for LOIs [2021-11-23 02:09:50,095 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2021-11-23 02:09:50,236 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 02:09:50,293 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 450 for LOIs [2021-11-23 02:09:50,818 INFO L180 IcfgInterpreter]: Interpretation finished