./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product35.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_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/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_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/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_e0802601-c95a-4e47-8e89-c78349edfc8c/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 97d4c6be733483d74e70aacf7c001bc7f4ca03733e33a8c0b4370e9380a7e003 --- 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 02:35:36,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:35:36,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:35:36,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:35:36,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:35:36,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:35:36,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:35:36,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:35:36,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:35:36,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:35:36,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:35:36,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:35:37,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:35:37,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:35:37,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:35:37,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:35:37,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:35:37,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:35:37,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:35:37,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:35:37,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:35:37,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:35:37,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:35:37,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:35:37,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:35:37,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:35:37,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:35:37,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:35:37,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:35:37,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:35:37,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:35:37,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:35:37,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:35:37,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:35:37,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:35:37,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:35:37,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:35:37,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:35:37,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:35:37,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:35:37,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:35:37,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:35:37,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:35:37,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:35:37,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:35:37,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:35:37,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:35:37,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:35:37,097 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:35:37,097 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:35:37,097 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:35:37,097 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:35:37,098 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:35:37,099 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:35:37,099 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:35:37,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:35:37,099 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:35:37,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:35:37,100 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:35:37,100 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:35:37,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:35:37,101 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:35:37,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:35:37,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:35:37,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:35:37,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:35:37,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:35:37,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:35:37,104 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:35:37,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:35:37,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:35:37,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:35:37,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:35:37,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:35:37,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:35:37,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:35:37,106 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:35:37,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:35:37,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:35:37,107 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:35:37,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:35:37,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:35:37,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:35:37,108 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_e0802601-c95a-4e47-8e89-c78349edfc8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97d4c6be733483d74e70aacf7c001bc7f4ca03733e33a8c0b4370e9380a7e003 [2022-11-03 02:35:37,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:35:37,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:35:37,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:35:37,403 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:35:37,404 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:35:37,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec11_product35.cil.c [2022-11-03 02:35:37,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/data/7cbc1e617/bb835d6d9b264d859856ed2e832e9a70/FLAG3b6a163bc [2022-11-03 02:35:37,986 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:35:37,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/sv-benchmarks/c/product-lines/email_spec11_product35.cil.c [2022-11-03 02:35:38,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/data/7cbc1e617/bb835d6d9b264d859856ed2e832e9a70/FLAG3b6a163bc [2022-11-03 02:35:38,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/data/7cbc1e617/bb835d6d9b264d859856ed2e832e9a70 [2022-11-03 02:35:38,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:35:38,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:35:38,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:35:38,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:35:38,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:35:38,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:35:38" (1/1) ... [2022-11-03 02:35:38,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274728c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:38, skipping insertion in model container [2022-11-03 02:35:38,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:35:38" (1/1) ... [2022-11-03 02:35:38,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:35:38,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:35:39,004 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_e0802601-c95a-4e47-8e89-c78349edfc8c/sv-benchmarks/c/product-lines/email_spec11_product35.cil.c[61136,61149] [2022-11-03 02:35:39,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:35:39,074 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:35:39,210 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_e0802601-c95a-4e47-8e89-c78349edfc8c/sv-benchmarks/c/product-lines/email_spec11_product35.cil.c[61136,61149] [2022-11-03 02:35:39,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:35:39,246 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:35:39,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39 WrapperNode [2022-11-03 02:35:39,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:35:39,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:35:39,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:35:39,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:35:39,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,340 INFO L138 Inliner]: procedures = 137, calls = 246, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1142 [2022-11-03 02:35:39,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:35:39,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:35:39,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:35:39,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:35:39,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:35:39,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:35:39,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:35:39,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:35:39,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (1/1) ... [2022-11-03 02:35:39,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:35:39,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:39,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:35:39,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:35:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:35:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:35:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:35:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:35:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:35:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:35:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:35:39,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:35:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:35:39,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:35:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:35:39,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:35:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:35:39,563 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:35:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:35:39,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:35:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:35:39,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:35:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:35:39,564 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:35:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:35:39,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:35:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:35:39,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:35:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:35:39,565 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:35:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:35:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:35:39,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:35:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 02:35:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 02:35:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:35:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:35:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:35:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:35:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:35:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:35:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:35:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:35:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:35:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:35:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:35:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:35:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:35:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:35:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:35:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:35:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:35:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:35:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:35:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:35:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:35:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:35:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:35:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:35:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:35:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:35:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:35:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:35:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:35:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:35:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:35:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:35:39,867 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:35:39,869 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:35:40,893 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:35:41,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:35:41,613 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:35:41,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:41 BoogieIcfgContainer [2022-11-03 02:35:41,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:35:41,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:35:41,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:35:41,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:35:41,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:35:38" (1/3) ... [2022-11-03 02:35:41,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556d6c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:35:41, skipping insertion in model container [2022-11-03 02:35:41,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:35:39" (2/3) ... [2022-11-03 02:35:41,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556d6c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:35:41, skipping insertion in model container [2022-11-03 02:35:41,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:35:41" (3/3) ... [2022-11-03 02:35:41,630 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product35.cil.c [2022-11-03 02:35:41,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:35:41,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:35:41,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:35:41,743 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;@2600e3af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:35:41,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:35:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-03 02:35:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-03 02:35:41,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:41,779 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:41,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash -542374725, now seen corresponding path program 1 times [2022-11-03 02:35:41,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:41,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059160010] [2022-11-03 02:35:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:41,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:35:42,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:42,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059160010] [2022-11-03 02:35:42,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059160010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:42,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:42,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:35:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659985480] [2022-11-03 02:35:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:35:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:35:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:35:42,343 INFO L87 Difference]: Start difference. First operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:35:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:42,586 INFO L93 Difference]: Finished difference Result 386 states and 511 transitions. [2022-11-03 02:35:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:35:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 106 [2022-11-03 02:35:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:42,600 INFO L225 Difference]: With dead ends: 386 [2022-11-03 02:35:42,600 INFO L226 Difference]: Without dead ends: 236 [2022-11-03 02:35:42,605 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 02:35:42,608 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:42,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:35:42,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-03 02:35:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-03 02:35:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-03 02:35:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 313 transitions. [2022-11-03 02:35:42,669 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 313 transitions. Word has length 106 [2022-11-03 02:35:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:42,671 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 313 transitions. [2022-11-03 02:35:42,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:35:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 313 transitions. [2022-11-03 02:35:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 02:35:42,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:42,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:42,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:35:42,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1080402575, now seen corresponding path program 1 times [2022-11-03 02:35:42,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:42,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313880622] [2022-11-03 02:35:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:35:43,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:43,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313880622] [2022-11-03 02:35:43,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313880622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:43,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:43,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:35:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073825469] [2022-11-03 02:35:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:35:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:35:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:35:43,126 INFO L87 Difference]: Start difference. First operand 236 states and 313 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:35:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:43,331 INFO L93 Difference]: Finished difference Result 382 states and 496 transitions. [2022-11-03 02:35:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:35:43,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 107 [2022-11-03 02:35:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:43,343 INFO L225 Difference]: With dead ends: 382 [2022-11-03 02:35:43,343 INFO L226 Difference]: Without dead ends: 238 [2022-11-03 02:35:43,350 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 02:35:43,353 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:43,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:35:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-03 02:35:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-11-03 02:35:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 138 states have internal predecessors, (168), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-03 02:35:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 315 transitions. [2022-11-03 02:35:43,394 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 315 transitions. Word has length 107 [2022-11-03 02:35:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:43,396 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 315 transitions. [2022-11-03 02:35:43,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:35:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 315 transitions. [2022-11-03 02:35:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:35:43,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:43,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:43,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:35:43,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:43,415 INFO L85 PathProgramCache]: Analyzing trace with hash 85543034, now seen corresponding path program 1 times [2022-11-03 02:35:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:43,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188083008] [2022-11-03 02:35:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:43,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:35:43,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:43,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188083008] [2022-11-03 02:35:43,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188083008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:43,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:43,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:35:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557294906] [2022-11-03 02:35:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:43,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:35:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:35:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:35:43,655 INFO L87 Difference]: Start difference. First operand 238 states and 315 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:35:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:43,834 INFO L93 Difference]: Finished difference Result 511 states and 697 transitions. [2022-11-03 02:35:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:35:43,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 112 [2022-11-03 02:35:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:43,849 INFO L225 Difference]: With dead ends: 511 [2022-11-03 02:35:43,849 INFO L226 Difference]: Without dead ends: 291 [2022-11-03 02:35:43,850 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 02:35:43,851 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 59 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:43,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 549 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:35:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-03 02:35:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 286. [2022-11-03 02:35:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 168 states have (on average 1.3273809523809523) internal successors, (223), 172 states have internal predecessors, (223), 88 states have call successors, (88), 29 states have call predecessors, (88), 29 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-03 02:35:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 398 transitions. [2022-11-03 02:35:43,905 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 398 transitions. Word has length 112 [2022-11-03 02:35:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:43,906 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 398 transitions. [2022-11-03 02:35:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:35:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 398 transitions. [2022-11-03 02:35:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:35:43,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:43,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:35:43,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1133276414, now seen corresponding path program 1 times [2022-11-03 02:35:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:43,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714266660] [2022-11-03 02:35:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:35:44,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:44,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714266660] [2022-11-03 02:35:44,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714266660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:35:44,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121029925] [2022-11-03 02:35:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:44,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:44,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:44,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:44,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:35:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:44,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:35:44,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:35:44,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:35:44,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121029925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:44,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [668571390] [2022-11-03 02:35:44,920 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2022-11-03 02:35:44,921 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:35:44,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:35:44,930 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:35:44,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:36:32,638 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 02:36:32,987 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:36:33,482 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:36:46,667 WARN L234 SmtUtils]: Spent 5.30s 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 02:36:52,283 WARN L234 SmtUtils]: Spent 5.47s 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 02:37:47,192 WARN L234 SmtUtils]: Spent 22.25s on a formula simplification. DAG size of input: 588 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:37:56,155 WARN L234 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 564 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:03,824 WARN L234 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 560 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:12,488 WARN L234 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 545 DAG size of output: 420 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:12,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [668571390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:12,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:12,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 02:38:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902490982] [2022-11-03 02:38:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:12,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:38:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:38:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:38:12,500 INFO L87 Difference]: Start difference. First operand 286 states and 398 transitions. Second operand has 21 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 02:38:22,881 WARN L234 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 570 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:45,549 WARN L234 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 519 DAG size of output: 445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:53,802 INFO L93 Difference]: Finished difference Result 651 states and 958 transitions. [2022-11-03 02:38:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:38:53,804 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 113 [2022-11-03 02:38:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:53,807 INFO L225 Difference]: With dead ends: 651 [2022-11-03 02:38:53,807 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 02:38:53,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 130.4s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:38:53,809 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 188 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:53,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 3936 Invalid, 2170 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [24 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 02:38:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 02:38:53,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 309. [2022-11-03 02:38:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 190 states have (on average 1.3473684210526315) internal successors, (256), 194 states have internal predecessors, (256), 88 states have call successors, (88), 30 states have call predecessors, (88), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-03 02:38:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 431 transitions. [2022-11-03 02:38:53,988 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 431 transitions. Word has length 113 [2022-11-03 02:38:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:53,988 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 431 transitions. [2022-11-03 02:38:53,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 02:38:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 431 transitions. [2022-11-03 02:38:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:38:53,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:53,992 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:54,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:54,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:54,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -298508784, now seen corresponding path program 1 times [2022-11-03 02:38:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201141738] [2022-11-03 02:38:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 02:38:54,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:54,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201141738] [2022-11-03 02:38:54,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201141738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:54,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:54,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016406018] [2022-11-03 02:38:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:54,362 INFO L87 Difference]: Start difference. First operand 309 states and 431 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:38:54,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:54,762 INFO L93 Difference]: Finished difference Result 721 states and 1042 transitions. [2022-11-03 02:38:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:54,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 118 [2022-11-03 02:38:54,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:54,766 INFO L225 Difference]: With dead ends: 721 [2022-11-03 02:38:54,766 INFO L226 Difference]: Without dead ends: 436 [2022-11-03 02:38:54,767 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 02:38:54,768 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 57 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:54,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 561 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:38:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-03 02:38:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 431. [2022-11-03 02:38:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 281 states have (on average 1.4092526690391458) internal successors, (396), 285 states have internal predecessors, (396), 119 states have call successors, (119), 30 states have call predecessors, (119), 30 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2022-11-03 02:38:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 633 transitions. [2022-11-03 02:38:55,052 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 633 transitions. Word has length 118 [2022-11-03 02:38:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:55,053 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 633 transitions. [2022-11-03 02:38:55,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:38:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 633 transitions. [2022-11-03 02:38:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 02:38:55,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:55,058 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:55,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:38:55,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash -349057739, now seen corresponding path program 1 times [2022-11-03 02:38:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:55,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865766463] [2022-11-03 02:38:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 02:38:55,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:55,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865766463] [2022-11-03 02:38:55,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865766463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:55,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622243386] [2022-11-03 02:38:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:55,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:55,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:55,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:55,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:38:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:55,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:38:55,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 02:38:55,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 02:38:55,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622243386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:55,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1190430011] [2022-11-03 02:38:55,788 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-03 02:38:55,788 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:38:55,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:38:55,789 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:38:55,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:39:53,731 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:39:54,069 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-03 02:39:54,416 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:40:15,198 WARN L234 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:40:20,900 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:02,283 WARN L234 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 579 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:20,969 WARN L234 SmtUtils]: Spent 13.31s on a formula simplification. DAG size of input: 578 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:31,443 WARN L234 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 574 DAG size of output: 313 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:46,650 WARN L234 SmtUtils]: Spent 13.61s on a formula simplification. DAG size of input: 577 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:55,557 WARN L234 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 549 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:01,867 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 580 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:02,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1190430011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:02,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:42:02,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 02:42:02,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434296270] [2022-11-03 02:42:02,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:02,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:42:02,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:02,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:42:02,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:42:02,079 INFO L87 Difference]: Start difference. First operand 431 states and 633 transitions. Second operand has 25 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-03 02:42:13,006 WARN L234 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 476 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:26,670 WARN L234 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 547 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:35,778 WARN L234 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 548 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:42,289 WARN L234 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 486 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:42:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:50,853 INFO L93 Difference]: Finished difference Result 895 states and 1348 transitions. [2022-11-03 02:42:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 02:42:50,854 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 119 [2022-11-03 02:42:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:50,857 INFO L225 Difference]: With dead ends: 895 [2022-11-03 02:42:50,857 INFO L226 Difference]: Without dead ends: 527 [2022-11-03 02:42:50,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 165.5s TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:42:50,860 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 327 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:50,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 3663 Invalid, 2411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:42:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-11-03 02:42:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 445. [2022-11-03 02:42:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 293 states have (on average 1.4095563139931742) internal successors, (413), 297 states have internal predecessors, (413), 120 states have call successors, (120), 31 states have call predecessors, (120), 31 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2022-11-03 02:42:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 652 transitions. [2022-11-03 02:42:51,126 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 652 transitions. Word has length 119 [2022-11-03 02:42:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:51,126 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 652 transitions. [2022-11-03 02:42:51,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-03 02:42:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 652 transitions. [2022-11-03 02:42:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 02:42:51,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:51,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:51,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:42:51,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:51,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1521651050, now seen corresponding path program 1 times [2022-11-03 02:42:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:51,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172974887] [2022-11-03 02:42:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:51,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:42:51,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:51,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172974887] [2022-11-03 02:42:51,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172974887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:42:51,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055345703] [2022-11-03 02:42:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:51,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:51,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:51,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:51,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:42:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:51,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:42:51,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:42:51,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:42:52,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055345703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:52,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643480000] [2022-11-03 02:42:52,084 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2022-11-03 02:42:52,084 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:42:52,085 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:42:52,085 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:42:52,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:43:44,302 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:43:44,634 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-03 02:43:44,711 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-11-03 02:43:44,786 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-03 02:43:44,857 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:43:45,192 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:44:51,205 WARN L234 SmtUtils]: Spent 19.89s on a formula simplification. DAG size of input: 619 DAG size of output: 499 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:11,136 WARN L234 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 545 DAG size of output: 420 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:24,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [643480000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:24,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:45:24,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-03 02:45:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126778007] [2022-11-03 02:45:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:45:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:45:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:45:24,273 INFO L87 Difference]: Start difference. First operand 445 states and 652 transitions. Second operand has 30 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 10 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-03 02:45:34,524 WARN L234 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 597 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:45:49,330 WARN L234 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 582 DAG size of output: 440 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:01,989 INFO L93 Difference]: Finished difference Result 905 states and 1358 transitions. [2022-11-03 02:46:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:46:01,990 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 10 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 122 [2022-11-03 02:46:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:01,992 INFO L225 Difference]: With dead ends: 905 [2022-11-03 02:46:01,992 INFO L226 Difference]: Without dead ends: 537 [2022-11-03 02:46:01,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 333 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 120.1s TimeCoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:46:01,995 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 131 mSDsluCounter, 4240 mSDsCounter, 0 mSdLazyCounter, 3554 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:01,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 4356 Invalid, 3569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3554 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2022-11-03 02:46:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-03 02:46:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 481. [2022-11-03 02:46:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 323 states have (on average 1.4086687306501549) internal successors, (455), 327 states have internal predecessors, (455), 123 states have call successors, (123), 34 states have call predecessors, (123), 34 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-03 02:46:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 700 transitions. [2022-11-03 02:46:02,521 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 700 transitions. Word has length 122 [2022-11-03 02:46:02,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:02,521 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 700 transitions. [2022-11-03 02:46:02,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 10 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-03 02:46:02,522 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 700 transitions. [2022-11-03 02:46:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:46:02,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:02,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:02,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:02,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:46:02,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1154174670, now seen corresponding path program 1 times [2022-11-03 02:46:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:46:02,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103425284] [2022-11-03 02:46:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:46:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:46:02,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:46:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103425284] [2022-11-03 02:46:02,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103425284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887274844] [2022-11-03 02:46:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:02,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:46:02,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:46:02,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0802601-c95a-4e47-8e89-c78349edfc8c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:46:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:03,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:46:03,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:46:03,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:46:03,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887274844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:03,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139000037] [2022-11-03 02:46:03,503 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-11-03 02:46:03,503 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:46:03,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:46:03,504 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:46:03,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:47:25,278 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:47:25,623 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-11-03 02:47:28,074 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 02:47:28,125 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:47:28,657 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-11-03 02:47:35,017 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-11-03 02:47:49,597 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-03 02:47:50,424 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-03 02:47:50,473 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-11-03 02:47:51,249 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-03 02:47:51,332 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-11-03 02:47:52,258 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-11-03 02:47:56,354 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-11-03 02:47:56,411 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:48:10,513 WARN L234 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:16,902 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)