./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9 --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 be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:56:21,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:56:21,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:56:21,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:56:21,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:56:21,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:56:21,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:56:21,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:56:21,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:56:21,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:56:21,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:56:21,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:56:21,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:56:21,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:56:21,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:56:21,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:56:21,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:56:21,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:56:21,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:56:21,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:56:21,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:56:21,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:56:21,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:56:21,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:56:21,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:56:21,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:56:21,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:56:21,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:56:21,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:56:21,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:56:21,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:56:21,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:56:21,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:56:21,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:56:21,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:56:21,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:56:21,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:56:21,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:56:21,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:56:21,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:56:21,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:56:21,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:56:21,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:56:21,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:56:21,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:56:21,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:56:21,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:56:21,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:56:21,934 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:56:21,935 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:56:21,935 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:56:21,935 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:56:21,936 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:56:21,936 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:56:21,936 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:56:21,937 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:56:21,937 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:56:21,937 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:56:21,938 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:56:21,938 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:56:21,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:56:21,939 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:56:21,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:56:21,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:56:21,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:56:21,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:56:21,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:56:21,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:56:21,941 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:56:21,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:56:21,942 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:56:21,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:56:21,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:56:21,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:56:21,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:56:21,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:56:21,944 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:56:21,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:56:21,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:56:21,944 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:56:21,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:56:21,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:56:21,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:56:21,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 [2022-11-20 20:56:22,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:56:22,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:56:22,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:56:22,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:56:22,275 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:56:22,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2022-11-20 20:56:25,508 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:56:25,921 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:56:25,922 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2022-11-20 20:56:25,958 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/data/4da7ea4af/91e81964c8b4407c88b4937e270face7/FLAG3bedee918 [2022-11-20 20:56:25,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/data/4da7ea4af/91e81964c8b4407c88b4937e270face7 [2022-11-20 20:56:25,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:56:25,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:56:25,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:56:25,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:56:26,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:56:26,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:56:25" (1/1) ... [2022-11-20 20:56:26,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e8877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26, skipping insertion in model container [2022-11-20 20:56:26,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:56:25" (1/1) ... [2022-11-20 20:56:26,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:56:26,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:56:26,547 WARN L237 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_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2022-11-20 20:56:26,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:56:26,664 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:56:26,772 WARN L237 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_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2022-11-20 20:56:26,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:56:26,875 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:56:26,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26 WrapperNode [2022-11-20 20:56:26,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:56:26,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:56:26,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:56:26,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:56:26,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,998 INFO L138 Inliner]: procedures = 130, calls = 217, calls flagged for inlining = 61, calls inlined = 58, statements flattened = 1072 [2022-11-20 20:56:26,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:56:26,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:56:26,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:56:27,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:56:27,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:56:27,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:56:27,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:56:27,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:56:27,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:56:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:27,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:56:27,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:56:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 20:56:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 20:56:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 20:56:27,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 20:56:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-11-20 20:56:27,303 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-11-20 20:56:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:56:27,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:56:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:56:27,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:56:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:56:27,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:56:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:56:27,305 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:56:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:56:27,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:56:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:56:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:56:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:56:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:56:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:56:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:56:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:56:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:56:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:56:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:56:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 20:56:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 20:56:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:56:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:56:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:56:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:56:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:56:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:56:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:56:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:56:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:56:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:56:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:56:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:56:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:56:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:56:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:56:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 20:56:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 20:56:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:56:27,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:56:27,565 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:56:27,567 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:56:28,638 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:56:29,433 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:56:29,434 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:56:29,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:56:29 BoogieIcfgContainer [2022-11-20 20:56:29,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:56:29,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:56:29,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:56:29,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:56:29,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:56:25" (1/3) ... [2022-11-20 20:56:29,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a5a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:56:29, skipping insertion in model container [2022-11-20 20:56:29,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (2/3) ... [2022-11-20 20:56:29,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a5a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:56:29, skipping insertion in model container [2022-11-20 20:56:29,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:56:29" (3/3) ... [2022-11-20 20:56:29,453 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product25.cil.c [2022-11-20 20:56:29,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:56:29,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:56:29,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:56:29,562 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f4f1a79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:56:29,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:56:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 106 states have internal predecessors, (136), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-20 20:56:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 20:56:29,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:29,589 INFO L195 NwaCegarLoop]: 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] [2022-11-20 20:56:29,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1667383075, now seen corresponding path program 1 times [2022-11-20 20:56:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:29,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508718965] [2022-11-20 20:56:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:29,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:56:30,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:30,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508718965] [2022-11-20 20:56:30,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508718965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:30,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:30,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:56:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095840478] [2022-11-20 20:56:30,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:30,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:56:30,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:56:30,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:56:30,119 INFO L87 Difference]: Start difference. First operand has 180 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 106 states have internal predecessors, (136), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:56:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:30,275 INFO L93 Difference]: Finished difference Result 268 states and 359 transitions. [2022-11-20 20:56:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:56:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-20 20:56:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:30,289 INFO L225 Difference]: With dead ends: 268 [2022-11-20 20:56:30,290 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 20:56:30,294 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:56:30,297 INFO L413 NwaCegarLoop]: 204 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, 204 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 [2022-11-20 20:56:30,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:30,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 20:56:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-20 20:56:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 103 states have internal predecessors, (130), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-20 20:56:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 237 transitions. [2022-11-20 20:56:30,353 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 237 transitions. Word has length 71 [2022-11-20 20:56:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:30,355 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 237 transitions. [2022-11-20 20:56:30,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:56:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 237 transitions. [2022-11-20 20:56:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 20:56:30,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:30,360 INFO L195 NwaCegarLoop]: 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] [2022-11-20 20:56:30,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:56:30,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash -379101384, now seen corresponding path program 1 times [2022-11-20 20:56:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:30,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061493256] [2022-11-20 20:56:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:56:30,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:30,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061493256] [2022-11-20 20:56:30,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061493256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:30,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:30,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213976710] [2022-11-20 20:56:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:30,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:30,680 INFO L87 Difference]: Start difference. First operand 177 states and 237 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:56:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:30,936 INFO L93 Difference]: Finished difference Result 264 states and 344 transitions. [2022-11-20 20:56:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-20 20:56:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:30,945 INFO L225 Difference]: With dead ends: 264 [2022-11-20 20:56:30,946 INFO L226 Difference]: Without dead ends: 179 [2022-11-20 20:56:30,949 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:56:30,952 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 401 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 [2022-11-20 20:56:30,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 401 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:56:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-20 20:56:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-20 20:56:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 105 states have internal predecessors, (132), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-20 20:56:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 239 transitions. [2022-11-20 20:56:30,996 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 239 transitions. Word has length 72 [2022-11-20 20:56:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:30,997 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 239 transitions. [2022-11-20 20:56:30,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:56:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 239 transitions. [2022-11-20 20:56:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 20:56:31,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:31,002 INFO L195 NwaCegarLoop]: 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] [2022-11-20 20:56:31,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:56:31,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:31,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1473074810, now seen corresponding path program 1 times [2022-11-20 20:56:31,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:31,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765475396] [2022-11-20 20:56:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:56:31,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:31,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765475396] [2022-11-20 20:56:31,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765475396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:31,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:31,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:31,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529739697] [2022-11-20 20:56:31,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:31,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:31,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:31,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:31,242 INFO L87 Difference]: Start difference. First operand 179 states and 239 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:56:31,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:31,423 INFO L93 Difference]: Finished difference Result 393 states and 545 transitions. [2022-11-20 20:56:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:31,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-20 20:56:31,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:31,429 INFO L225 Difference]: With dead ends: 393 [2022-11-20 20:56:31,430 INFO L226 Difference]: Without dead ends: 232 [2022-11-20 20:56:31,436 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:56:31,439 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 59 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 412 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 [2022-11-20 20:56:31,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 412 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-20 20:56:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2022-11-20 20:56:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 137 states have (on average 1.364963503649635) internal successors, (187), 139 states have internal predecessors, (187), 68 states have call successors, (68), 21 states have call predecessors, (68), 21 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-20 20:56:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 322 transitions. [2022-11-20 20:56:31,478 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 322 transitions. Word has length 77 [2022-11-20 20:56:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:31,480 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 322 transitions. [2022-11-20 20:56:31,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:56:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 322 transitions. [2022-11-20 20:56:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 20:56:31,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:31,487 INFO L195 NwaCegarLoop]: 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] [2022-11-20 20:56:31,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:56:31,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash 769229580, now seen corresponding path program 1 times [2022-11-20 20:56:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:31,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234498465] [2022-11-20 20:56:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:31,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:56:31,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:31,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234498465] [2022-11-20 20:56:31,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234498465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:56:31,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844465456] [2022-11-20 20:56:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:31,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:56:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:31,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:56:31,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:56:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:32,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:56:32,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:56:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:56:32,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:56:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:56:32,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844465456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:56:32,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122974385] [2022-11-20 20:56:32,332 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-20 20:56:32,333 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:56:32,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:56:32,343 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:56:32,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:57:05,312 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 20:57:05,646 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:57:05,983 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-11-20 20:57:08,149 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-11-20 20:57:12,742 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2022-11-20 20:57:12,792 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 266 for LOIs [2022-11-20 20:57:21,107 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2022-11-20 20:57:21,401 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-11-20 20:57:21,466 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-20 20:57:23,943 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-20 20:57:23,991 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:58:02,743 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 492 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:14,326 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 514 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:21,158 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 570 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:29,081 WARN L233 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 565 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:34,423 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 567 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:39,845 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 565 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:45,806 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 569 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:59:03,574 WARN L233 SmtUtils]: Spent 14.04s on a formula simplification. DAG size of input: 480 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:59:51,663 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 438 DAG size of output: 317 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:59:57,468 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 444 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:00:05,911 WARN L233 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 537 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:00:12,436 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 537 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:00:12,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2122974385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:00:12,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:00:12,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-20 21:00:12,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881547384] [2022-11-20 21:00:12,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:00:12,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 21:00:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:00:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 21:00:12,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2713, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 21:00:12,448 INFO L87 Difference]: Start difference. First operand 227 states and 322 transitions. Second operand has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-20 21:00:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:00:53,824 INFO L93 Difference]: Finished difference Result 545 states and 806 transitions. [2022-11-20 21:00:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 21:00:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 78 [2022-11-20 21:00:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:00:53,830 INFO L225 Difference]: With dead ends: 545 [2022-11-20 21:00:53,830 INFO L226 Difference]: Without dead ends: 336 [2022-11-20 21:00:53,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 181.5s TimeCoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 21:00:53,833 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 161 mSDsluCounter, 5486 mSDsCounter, 0 mSdLazyCounter, 6938 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 5709 SdHoareTripleChecker+Invalid, 6960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2022-11-20 21:00:53,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 5709 Invalid, 6960 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [22 Valid, 6938 Invalid, 0 Unknown, 0 Unchecked, 27.7s Time] [2022-11-20 21:00:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-20 21:00:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 293. [2022-11-20 21:00:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 185 states have (on average 1.3567567567567567) internal successors, (251), 188 states have internal predecessors, (251), 79 states have call successors, (79), 30 states have call predecessors, (79), 28 states have return successors, (79), 74 states have call predecessors, (79), 78 states have call successors, (79) [2022-11-20 21:00:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 409 transitions. [2022-11-20 21:00:54,019 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 409 transitions. Word has length 78 [2022-11-20 21:00:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:00:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 409 transitions. [2022-11-20 21:00:54,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-20 21:00:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 409 transitions. [2022-11-20 21:00:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 21:00:54,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:00:54,023 INFO L195 NwaCegarLoop]: 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] [2022-11-20 21:00:54,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 21:00:54,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:00:54,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:00:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:00:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1426991427, now seen corresponding path program 1 times [2022-11-20 21:00:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:00:54,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869686980] [2022-11-20 21:00:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:54,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:00:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:00:54,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:00:54,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869686980] [2022-11-20 21:00:54,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869686980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:00:54,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:00:54,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:00:54,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785097896] [2022-11-20 21:00:54,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:00:54,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:00:54,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:00:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:00:54,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:00:54,324 INFO L87 Difference]: Start difference. First operand 293 states and 409 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 21:00:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:00:54,637 INFO L93 Difference]: Finished difference Result 688 states and 998 transitions. [2022-11-20 21:00:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:00:54,637 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-20 21:00:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:00:54,640 INFO L225 Difference]: With dead ends: 688 [2022-11-20 21:00:54,640 INFO L226 Difference]: Without dead ends: 421 [2022-11-20 21:00:54,642 INFO L412 NwaCegarLoop]: 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 [2022-11-20 21:00:54,642 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 57 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 432 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 [2022-11-20 21:00:54,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 432 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:00:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-11-20 21:00:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 414. [2022-11-20 21:00:54,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 275 states have (on average 1.4218181818181819) internal successors, (391), 278 states have internal predecessors, (391), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (110), 105 states have call predecessors, (110), 109 states have call successors, (110) [2022-11-20 21:00:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 611 transitions. [2022-11-20 21:00:54,862 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 611 transitions. Word has length 83 [2022-11-20 21:00:54,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:00:54,863 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 611 transitions. [2022-11-20 21:00:54,863 INFO L496 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 21:00:54,863 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 611 transitions. [2022-11-20 21:00:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 21:00:54,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:00:54,866 INFO L195 NwaCegarLoop]: 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] [2022-11-20 21:00:54,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:00:54,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:00:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:00:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash -678441256, now seen corresponding path program 1 times [2022-11-20 21:00:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:00:54,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094562165] [2022-11-20 21:00:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:54,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:00:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:00:55,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:00:55,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094562165] [2022-11-20 21:00:55,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094562165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:00:55,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870924337] [2022-11-20 21:00:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:55,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:00:55,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:00:55,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:00:55,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:00:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:55,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:00:55,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:00:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:00:55,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:00:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 21:00:55,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870924337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:00:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572433898] [2022-11-20 21:00:55,459 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-20 21:00:55,459 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:00:55,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:00:55,460 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:00:55,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:01:32,143 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 21:01:32,457 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-20 21:01:32,779 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-11-20 21:01:34,505 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2022-11-20 21:01:38,436 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 258 for LOIs [2022-11-20 21:01:38,487 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 262 for LOIs [2022-11-20 21:01:41,620 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-11-20 21:01:41,654 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-11-20 21:01:41,695 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-20 21:01:43,680 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-11-20 21:01:43,723 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:02:01,606 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:26,700 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 492 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:38,476 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 514 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:49,495 WARN L233 SmtUtils]: Spent 10.69s on a formula simplification. DAG size of input: 588 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:16,264 WARN L233 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:54,478 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 497 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:04:04,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [572433898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:04:04,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:04:04,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-20 21:04:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695352097] [2022-11-20 21:04:04,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:04:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 21:04:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:04:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 21:04:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 21:04:04,772 INFO L87 Difference]: Start difference. First operand 414 states and 611 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:05:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:05:17,282 INFO L93 Difference]: Finished difference Result 880 states and 1347 transitions. [2022-11-20 21:05:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-20 21:05:17,283 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 84 [2022-11-20 21:05:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:05:17,288 INFO L225 Difference]: With dead ends: 880 [2022-11-20 21:05:17,288 INFO L226 Difference]: Without dead ends: 571 [2022-11-20 21:05:17,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 184.7s TimeCoverageRelationStatistics Valid=273, Invalid=4557, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 21:05:17,291 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 398 mSDsluCounter, 4553 mSDsCounter, 0 mSdLazyCounter, 6692 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 6749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 6692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:05:17,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 4769 Invalid, 6749 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [57 Valid, 6692 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2022-11-20 21:05:17,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-20 21:05:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 430. [2022-11-20 21:05:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 287 states have (on average 1.4250871080139373) internal successors, (409), 292 states have internal predecessors, (409), 113 states have call successors, (113), 31 states have call predecessors, (113), 29 states have return successors, (113), 106 states have call predecessors, (113), 112 states have call successors, (113) [2022-11-20 21:05:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 635 transitions. [2022-11-20 21:05:17,523 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 635 transitions. Word has length 84 [2022-11-20 21:05:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:05:17,523 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 635 transitions. [2022-11-20 21:05:17,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:05:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 635 transitions. [2022-11-20 21:05:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 21:05:17,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:05:17,526 INFO L195 NwaCegarLoop]: 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] [2022-11-20 21:05:17,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 21:05:17,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 21:05:17,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:05:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:05:17,734 INFO L85 PathProgramCache]: Analyzing trace with hash 517204407, now seen corresponding path program 1 times [2022-11-20 21:05:17,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:05:17,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320098287] [2022-11-20 21:05:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:05:17,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:05:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:05:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 21:05:17,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:05:17,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320098287] [2022-11-20 21:05:17,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320098287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:05:17,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079607626] [2022-11-20 21:05:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:05:17,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:05:17,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:05:17,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:05:17,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:05:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:05:18,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:05:18,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:05:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 21:05:18,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:05:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 21:05:18,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079607626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:05:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072619993] [2022-11-20 21:05:18,347 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-20 21:05:18,347 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:05:18,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:05:18,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:05:18,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:05:45,436 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 21:05:45,744 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 21:05:46,045 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-11-20 21:05:47,782 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2022-11-20 21:05:51,541 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 267 for LOIs [2022-11-20 21:05:51,598 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 266 for LOIs [2022-11-20 21:06:07,690 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2022-11-20 21:06:07,936 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-11-20 21:06:07,978 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-20 21:06:08,018 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-20 21:06:11,550 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 438 for LOIs [2022-11-20 21:06:11,813 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:06:29,623 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:06:53,497 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 492 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:05,515 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 514 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:12,461 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 570 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:20,547 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 565 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:26,002 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 567 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:31,379 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 565 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:36,826 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 569 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:53,477 WARN L233 SmtUtils]: Spent 13.23s on a formula simplification. DAG size of input: 480 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:08:41,096 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 438 DAG size of output: 317 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:08:47,270 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 444 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:08:56,354 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 537 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:03,279 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 537 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:14,725 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 456 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:25,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1072619993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:25,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:09:25,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-20 21:09:25,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362695642] [2022-11-20 21:09:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:25,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-20 21:09:25,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:09:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-20 21:09:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3359, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 21:09:25,029 INFO L87 Difference]: Start difference. First operand 430 states and 635 transitions. Second operand has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 33 states have internal predecessors, (42), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:10:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:05,049 INFO L93 Difference]: Finished difference Result 595 states and 859 transitions. [2022-11-20 21:10:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 21:10:05,050 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 33 states have internal predecessors, (42), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 83 [2022-11-20 21:10:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:05,054 INFO L225 Difference]: With dead ends: 595 [2022-11-20 21:10:05,054 INFO L226 Difference]: Without dead ends: 517 [2022-11-20 21:10:05,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 206.4s TimeCoverageRelationStatistics Valid=205, Invalid=3827, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 21:10:05,057 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 206 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 6397 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 4927 SdHoareTripleChecker+Invalid, 6410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 6397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:05,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 4927 Invalid, 6410 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13 Valid, 6397 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2022-11-20 21:10:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-20 21:10:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 491. [2022-11-20 21:10:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 330 states have (on average 1.406060606060606) internal successors, (464), 336 states have internal predecessors, (464), 124 states have call successors, (124), 40 states have call predecessors, (124), 36 states have return successors, (125), 114 states have call predecessors, (125), 123 states have call successors, (125) [2022-11-20 21:10:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 713 transitions. [2022-11-20 21:10:05,395 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 713 transitions. Word has length 83 [2022-11-20 21:10:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:05,395 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 713 transitions. [2022-11-20 21:10:05,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 33 states have internal predecessors, (42), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:10:05,396 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 713 transitions. [2022-11-20 21:10:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 21:10:05,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:05,399 INFO L195 NwaCegarLoop]: 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] [2022-11-20 21:10:05,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:10:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:05,606 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:05,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash -591612383, now seen corresponding path program 1 times [2022-11-20 21:10:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:05,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158040629] [2022-11-20 21:10:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:05,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 21:10:05,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:05,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158040629] [2022-11-20 21:10:05,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158040629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524634042] [2022-11-20 21:10:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:05,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:05,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:05,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:05,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a8ff3c-c6bb-4ff0-bca6-0cd447e95387/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:10:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:06,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:10:06,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 21:10:06,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:10:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 21:10:06,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524634042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:10:06,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1811617815] [2022-11-20 21:10:06,325 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-20 21:10:06,326 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:10:06,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:10:06,326 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:10:06,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs