./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI --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 4373ae32f100aa418b32a7018bfdec5c3f7ae719a7f9b296410b14fba54a4baf --- 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-5e519f3 [2022-11-03 02:13:26,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:13:26,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:13:27,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:13:27,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:13:27,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:13:27,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:13:27,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:13:27,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:13:27,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:13:27,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:13:27,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:13:27,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:13:27,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:13:27,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:13:27,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:13:27,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:13:27,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:13:27,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:13:27,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:13:27,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:13:27,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:13:27,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:13:27,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:13:27,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:13:27,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:13:27,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:13:27,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:13:27,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:13:27,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:13:27,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:13:27,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:13:27,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:13:27,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:13:27,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:13:27,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:13:27,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:13:27,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:13:27,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:13:27,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:13:27,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:13:27,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:13:27,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:13:27,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:13:27,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:13:27,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:13:27,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:13:27,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:13:27,128 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:13:27,128 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:13:27,129 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:13:27,129 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:13:27,130 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:13:27,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:13:27,130 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:13:27,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:13:27,131 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:13:27,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:13:27,131 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:13:27,131 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:13:27,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:13:27,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:13:27,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:13:27,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:13:27,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:13:27,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:13:27,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:13:27,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:13:27,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:13:27,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:13:27,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:13:27,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:13:27,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:13:27,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:13:27,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:27,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:13:27,138 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:13:27,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:13:27,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:13:27,138 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:13:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:13:27,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:13:27,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:13:27,140 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_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4373ae32f100aa418b32a7018bfdec5c3f7ae719a7f9b296410b14fba54a4baf [2022-11-03 02:13:27,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:13:27,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:13:27,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:13:27,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:13:27,532 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:13:27,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec4_product27.cil.c [2022-11-03 02:13:27,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/data/822fe6e14/40b6848fe3434addabf5ea721d792041/FLAG879f50dd6 [2022-11-03 02:13:28,287 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:13:28,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/sv-benchmarks/c/product-lines/email_spec4_product27.cil.c [2022-11-03 02:13:28,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/data/822fe6e14/40b6848fe3434addabf5ea721d792041/FLAG879f50dd6 [2022-11-03 02:13:28,513 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/data/822fe6e14/40b6848fe3434addabf5ea721d792041 [2022-11-03 02:13:28,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:13:28,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:13:28,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:28,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:13:28,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:13:28,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:28" (1/1) ... [2022-11-03 02:13:28,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2646f081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:28, skipping insertion in model container [2022-11-03 02:13:28,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:28" (1/1) ... [2022-11-03 02:13:28,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:13:28,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:13:28,945 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/sv-benchmarks/c/product-lines/email_spec4_product27.cil.c[1542,1555] [2022-11-03 02:13:29,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:29,368 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:13:29,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/sv-benchmarks/c/product-lines/email_spec4_product27.cil.c[1542,1555] [2022-11-03 02:13:29,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:29,527 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:13:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29 WrapperNode [2022-11-03 02:13:29,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:29,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:29,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:13:29,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:13:29,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,710 INFO L138 Inliner]: procedures = 133, calls = 228, calls flagged for inlining = 64, calls inlined = 61, statements flattened = 1112 [2022-11-03 02:13:29,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:29,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:13:29,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:13:29,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:13:29,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,835 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:13:29,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:13:29,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:13:29,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:13:29,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (1/1) ... [2022-11-03 02:13:29,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:29,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:29,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:13:29,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:13:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:13:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:13:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:13:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:13:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:13:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:13:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:13:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:13:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:13:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:13:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:13:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:13:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:13:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:13:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:13:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:13:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:13:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:13:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:13:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:13:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:13:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:13:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:13:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 02:13:29,991 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 02:13:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:13:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:13:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:13:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:13:29,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:13:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:13:29,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:13:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:13:29,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:13:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:13:29,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:13:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:13:29,997 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:13:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:13:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:13:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:13:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:13:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:13:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:13:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:13:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:13:30,000 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:13:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:13:30,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:13:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:13:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:13:30,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:13:30,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:13:31,401 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:13:32,254 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:13:32,254 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:13:32,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:32 BoogieIcfgContainer [2022-11-03 02:13:32,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:13:32,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:13:32,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:13:32,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:13:32,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:13:28" (1/3) ... [2022-11-03 02:13:32,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3797f80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:32, skipping insertion in model container [2022-11-03 02:13:32,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:29" (2/3) ... [2022-11-03 02:13:32,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3797f80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:32, skipping insertion in model container [2022-11-03 02:13:32,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:32" (3/3) ... [2022-11-03 02:13:32,270 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product27.cil.c [2022-11-03 02:13:32,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:13:32,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:13:32,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:13:32,372 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;@27baf5d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:13:32,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:13:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 116 states have internal predecessors, (148), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-03 02:13:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:13:32,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:32,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:32,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:32,397 INFO L85 PathProgramCache]: Analyzing trace with hash -759364448, now seen corresponding path program 1 times [2022-11-03 02:13:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:32,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648019624] [2022-11-03 02:13:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:32,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:13:32,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:32,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648019624] [2022-11-03 02:13:32,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648019624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:32,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:32,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:13:32,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561296912] [2022-11-03 02:13:32,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:32,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:13:32,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:32,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:13:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:13:32,943 INFO L87 Difference]: Start difference. First operand has 198 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 116 states have internal predecessors, (148), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:13:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:33,166 INFO L93 Difference]: Finished difference Result 304 states and 407 transitions. [2022-11-03 02:13:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:13:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-03 02:13:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:33,182 INFO L225 Difference]: With dead ends: 304 [2022-11-03 02:13:33,183 INFO L226 Difference]: Without dead ends: 195 [2022-11-03 02:13:33,192 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 [2022-11-03 02:13:33,198 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:33,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 224 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:13:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-03 02:13:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-03 02:13:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 113 states have internal predecessors, (142), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-03 02:13:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 261 transitions. [2022-11-03 02:13:33,269 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 261 transitions. Word has length 65 [2022-11-03 02:13:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:33,271 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 261 transitions. [2022-11-03 02:13:33,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:13:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 261 transitions. [2022-11-03 02:13:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:13:33,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:33,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:33,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:13:33,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:33,277 INFO L85 PathProgramCache]: Analyzing trace with hash 129975916, now seen corresponding path program 1 times [2022-11-03 02:13:33,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:33,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550920906] [2022-11-03 02:13:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:33,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:13:33,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:33,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550920906] [2022-11-03 02:13:33,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550920906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:33,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:33,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710051644] [2022-11-03 02:13:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:33,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:33,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:33,558 INFO L87 Difference]: Start difference. First operand 195 states and 261 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:13:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:33,759 INFO L93 Difference]: Finished difference Result 300 states and 392 transitions. [2022-11-03 02:13:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-03 02:13:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:33,764 INFO L225 Difference]: With dead ends: 300 [2022-11-03 02:13:33,764 INFO L226 Difference]: Without dead ends: 197 [2022-11-03 02:13:33,765 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 [2022-11-03 02:13:33,767 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:33,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 441 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:13:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-03 02:13:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-03 02:13:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 115 states have internal predecessors, (144), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-03 02:13:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 263 transitions. [2022-11-03 02:13:33,792 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 263 transitions. Word has length 66 [2022-11-03 02:13:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:33,792 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 263 transitions. [2022-11-03 02:13:33,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:13:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 263 transitions. [2022-11-03 02:13:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:13:33,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:33,800 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] [2022-11-03 02:13:33,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:13:33,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2121415515, now seen corresponding path program 1 times [2022-11-03 02:13:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:33,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870852669] [2022-11-03 02:13:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:13:34,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:34,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870852669] [2022-11-03 02:13:34,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870852669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:34,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:34,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611327130] [2022-11-03 02:13:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:34,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:34,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:34,050 INFO L87 Difference]: Start difference. First operand 197 states and 263 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:13:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:34,238 INFO L93 Difference]: Finished difference Result 429 states and 593 transitions. [2022-11-03 02:13:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:34,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-11-03 02:13:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:34,242 INFO L225 Difference]: With dead ends: 429 [2022-11-03 02:13:34,242 INFO L226 Difference]: Without dead ends: 250 [2022-11-03 02:13:34,244 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 [2022-11-03 02:13:34,245 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 59 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:34,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 458 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:13:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-03 02:13:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 245. [2022-11-03 02:13:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 149 states have internal predecessors, (199), 74 states have call successors, (74), 23 states have call predecessors, (74), 23 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-03 02:13:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 346 transitions. [2022-11-03 02:13:34,275 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 346 transitions. Word has length 71 [2022-11-03 02:13:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:34,276 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 346 transitions. [2022-11-03 02:13:34,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:13:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 346 transitions. [2022-11-03 02:13:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:13:34,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:34,280 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] [2022-11-03 02:13:34,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:13:34,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash -145725422, now seen corresponding path program 1 times [2022-11-03 02:13:34,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:34,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938827884] [2022-11-03 02:13:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:13:34,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938827884] [2022-11-03 02:13:34,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938827884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:13:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492001157] [2022-11-03 02:13:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:34,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:13:34,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:34,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:13:34,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:13:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:34,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:13:34,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:13:34,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:13:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:13:35,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492001157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:13:35,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [538079003] [2022-11-03 02:13:35,108 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-03 02:13:35,108 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:13:35,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:13:35,119 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:13:35,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:14:19,044 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:14:19,414 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:14:19,865 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:14:33,275 WARN L234 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:39,177 WARN L234 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:02,405 WARN L234 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 486 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:15,427 WARN L234 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 508 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:40,911 WARN L234 SmtUtils]: Spent 23.89s on a formula simplification. DAG size of input: 589 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:58,574 WARN L234 SmtUtils]: Spent 15.81s on a formula simplification. DAG size of input: 591 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:06,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [538079003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:06,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:06,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 02:16:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680183777] [2022-11-03 02:16:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:06,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:16:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:16:06,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:16:06,666 INFO L87 Difference]: Start difference. First operand 245 states and 346 transitions. Second operand has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-03 02:16:18,275 WARN L234 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 530 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:40,858 WARN L234 SmtUtils]: Spent 10.36s on a formula simplification. DAG size of input: 586 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:50,995 INFO L93 Difference]: Finished difference Result 541 states and 799 transitions. [2022-11-03 02:16:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:16:51,003 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 72 [2022-11-03 02:16:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:51,007 INFO L225 Difference]: With dead ends: 541 [2022-11-03 02:16:51,007 INFO L226 Difference]: Without dead ends: 314 [2022-11-03 02:16:51,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 142.1s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:16:51,014 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 131 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:51,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 3460 Invalid, 1976 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [22 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:16:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-03 02:16:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 273. [2022-11-03 02:16:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 174 states have (on average 1.367816091954023) internal successors, (238), 176 states have internal predecessors, (238), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-03 02:16:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 385 transitions. [2022-11-03 02:16:51,129 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 385 transitions. Word has length 72 [2022-11-03 02:16:51,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:51,129 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 385 transitions. [2022-11-03 02:16:51,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-03 02:16:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 385 transitions. [2022-11-03 02:16:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:16:51,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:51,136 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:51,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:51,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:51,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1258749791, now seen corresponding path program 1 times [2022-11-03 02:16:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:51,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259092144] [2022-11-03 02:16:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:16:51,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:51,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259092144] [2022-11-03 02:16:51,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259092144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:51,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646828144] [2022-11-03 02:16:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:51,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:51,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:51,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:51,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:16:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:51,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:16:51,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:16:51,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:16:51,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646828144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:51,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1615199010] [2022-11-03 02:16:51,947 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-03 02:16:51,948 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:16:51,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:16:51,949 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:16:51,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:17:35,238 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:17:35,565 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 02:17:35,934 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:17:49,063 WARN L234 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:55,010 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:19,998 WARN L234 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 486 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:33,145 WARN L234 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 508 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:58,874 WARN L234 SmtUtils]: Spent 24.22s on a formula simplification. DAG size of input: 585 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:12,351 WARN L234 SmtUtils]: Spent 11.75s on a formula simplification. DAG size of input: 587 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:20,738 WARN L234 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 564 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:29,062 WARN L234 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 560 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:36,618 WARN L234 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 570 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:44,248 WARN L234 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 566 DAG size of output: 316 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:48,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1615199010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:48,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:48,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:19:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264000837] [2022-11-03 02:19:48,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:19:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:19:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:19:48,668 INFO L87 Difference]: Start difference. First operand 273 states and 385 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 02:20:05,578 WARN L234 SmtUtils]: Spent 15.20s on a formula simplification. DAG size of input: 522 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:25,617 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 414 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:31,718 WARN L234 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 410 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:52,687 WARN L234 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 503 DAG size of output: 406 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:59,028 WARN L234 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 343 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:06,890 INFO L93 Difference]: Finished difference Result 597 states and 880 transitions. [2022-11-03 02:21:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 02:21:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 78 [2022-11-03 02:21:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:06,894 INFO L225 Difference]: With dead ends: 597 [2022-11-03 02:21:06,895 INFO L226 Difference]: Without dead ends: 370 [2022-11-03 02:21:06,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 199.5s TimeCoverageRelationStatistics Valid=216, Invalid=1344, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:21:06,898 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 154 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:06,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 3726 Invalid, 2346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 02:21:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-03 02:21:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 287. [2022-11-03 02:21:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 186 states have (on average 1.3709677419354838) internal successors, (255), 188 states have internal predecessors, (255), 75 states have call successors, (75), 25 states have call predecessors, (75), 25 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-03 02:21:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 404 transitions. [2022-11-03 02:21:07,043 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 404 transitions. Word has length 78 [2022-11-03 02:21:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:07,044 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 404 transitions. [2022-11-03 02:21:07,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 02:21:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 404 transitions. [2022-11-03 02:21:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:21:07,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:07,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:07,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:07,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:07,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:07,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1824324572, now seen corresponding path program 1 times [2022-11-03 02:21:07,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:07,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898289126] [2022-11-03 02:21:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:07,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:21:07,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:07,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898289126] [2022-11-03 02:21:07,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898289126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:07,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641207693] [2022-11-03 02:21:07,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:07,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:07,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:07,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:07,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:21:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:07,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:21:07,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:21:07,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:21:07,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641207693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:07,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1262862131] [2022-11-03 02:21:07,965 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-03 02:21:07,966 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:21:07,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:21:07,968 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:21:07,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:22:06,131 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:22:06,442 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-03 02:22:06,510 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-03 02:22:06,576 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 449 for LOIs [2022-11-03 02:22:06,969 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:22:07,286 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:22:44,440 WARN L234 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 486 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:56,975 WARN L234 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 508 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:10,254 WARN L234 SmtUtils]: Spent 12.92s on a formula simplification. DAG size of input: 619 DAG size of output: 406 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:20,813 WARN L234 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 568 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:27,400 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 570 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:43,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1262862131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:43,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:23:43,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-03 02:23:43,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668272231] [2022-11-03 02:23:43,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:43,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:23:43,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:23:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:23:43,589 INFO L87 Difference]: Start difference. First operand 287 states and 404 transitions. Second operand has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-03 02:24:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:05,798 INFO L93 Difference]: Finished difference Result 606 states and 889 transitions. [2022-11-03 02:24:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:24:05,799 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2022-11-03 02:24:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:05,803 INFO L225 Difference]: With dead ends: 606 [2022-11-03 02:24:05,803 INFO L226 Difference]: Without dead ends: 379 [2022-11-03 02:24:05,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 104.5s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 02:24:05,805 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 129 mSDsluCounter, 3786 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:05,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 3873 Invalid, 3342 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 02:24:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-03 02:24:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 323. [2022-11-03 02:24:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 216 states have (on average 1.375) internal successors, (297), 218 states have internal predecessors, (297), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-03 02:24:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 452 transitions. [2022-11-03 02:24:06,009 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 452 transitions. Word has length 81 [2022-11-03 02:24:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:06,009 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 452 transitions. [2022-11-03 02:24:06,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-03 02:24:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 452 transitions. [2022-11-03 02:24:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:24:06,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:06,012 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:06,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:06,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:06,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:06,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash 481324300, now seen corresponding path program 1 times [2022-11-03 02:24:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:06,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143483539] [2022-11-03 02:24:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:24:06,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:06,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143483539] [2022-11-03 02:24:06,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143483539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:06,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967254988] [2022-11-03 02:24:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:06,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:06,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:06,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:06,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91a74195-c9d8-4743-b6fa-2f9979b21959/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:24:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:06,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:24:06,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:24:06,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:24:06,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967254988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:06,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2046282886] [2022-11-03 02:24:06,806 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 02:24:06,807 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:24:06,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:24:06,807 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:24:06,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:24:54,676 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:24:55,036 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:24:55,337 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 469 for LOIs [2022-11-03 02:25:30,449 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-11-03 02:25:30,827 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 467 for LOIs [2022-11-03 02:25:37,222 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2022-11-03 02:25:42,068 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 436 for LOIs [2022-11-03 02:25:42,342 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-03 02:25:43,209 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2022-11-03 02:25:43,249 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2022-11-03 02:25:43,295 INFO L180 IcfgInterpreter]: Interpretation finished