./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd6587ac6cf18c69f9c15caef5354ee5ad606346c35154ee0861ae3e169457d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:32:14,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:32:14,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:32:14,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:32:14,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:32:14,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:32:14,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:32:14,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:32:14,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:32:14,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:32:14,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:32:14,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:32:14,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:32:14,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:32:14,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:32:14,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:32:14,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:32:14,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:32:14,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:32:14,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:32:14,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:32:14,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:32:14,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:32:14,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:32:14,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:32:14,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:32:14,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:32:14,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:32:14,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:32:14,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:32:14,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:32:14,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:32:14,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:32:14,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:32:14,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:32:14,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:32:14,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:32:14,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:32:14,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:32:14,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:32:14,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:32:14,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:32:14,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:32:14,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:32:14,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:32:14,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:32:14,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:32:14,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:32:14,292 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:32:14,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:32:14,293 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:32:14,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:32:14,294 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:32:14,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:32:14,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:32:14,295 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:32:14,295 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:32:14,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:32:14,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:32:14,296 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:32:14,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:32:14,296 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:32:14,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:32:14,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:32:14,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:32:14,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:32:14,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:32:14,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:32:14,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:32:14,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:32:14,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:32:14,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:32:14,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:32:14,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:32:14,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:32:14,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:32:14,300 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:32:14,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:32:14,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:32:14,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:32:14,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:32:14,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:32:14,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:32:14,302 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_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd6587ac6cf18c69f9c15caef5354ee5ad606346c35154ee0861ae3e169457d6 [2022-11-20 20:32:14,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:32:14,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:32:14,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:32:14,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:32:14,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:32:14,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec0_product38.cil.c [2022-11-20 20:32:18,002 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:32:18,307 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:32:18,307 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/sv-benchmarks/c/product-lines/email_spec0_product38.cil.c [2022-11-20 20:32:18,336 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/data/61d7e6b58/46d4a6de2aa245a182ef5b8be168bbc9/FLAGd5b2c35e8 [2022-11-20 20:32:18,351 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/data/61d7e6b58/46d4a6de2aa245a182ef5b8be168bbc9 [2022-11-20 20:32:18,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:32:18,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:32:18,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:32:18,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:32:18,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:32:18,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:32:18" (1/1) ... [2022-11-20 20:32:18,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0c0447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:18, skipping insertion in model container [2022-11-20 20:32:18,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:32:18" (1/1) ... [2022-11-20 20:32:18,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:32:18,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:32:18,816 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/sv-benchmarks/c/product-lines/email_spec0_product38.cil.c[9373,9386] [2022-11-20 20:32:19,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:32:19,216 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:32:19,253 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/sv-benchmarks/c/product-lines/email_spec0_product38.cil.c[9373,9386] [2022-11-20 20:32:19,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:32:19,350 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:32:19,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19 WrapperNode [2022-11-20 20:32:19,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:32:19,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:32:19,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:32:19,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:32:19,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,461 INFO L138 Inliner]: procedures = 124, calls = 195, calls flagged for inlining = 49, calls inlined = 46, statements flattened = 870 [2022-11-20 20:32:19,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:32:19,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:32:19,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:32:19,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:32:19,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,502 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:32:19,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:32:19,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:32:19,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:32:19,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (1/1) ... [2022-11-20 20:32:19,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:32:19,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:32:19,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:32:19,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:32:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 20:32:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 20:32:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 20:32:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 20:32:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-11-20 20:32:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-11-20 20:32:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:32:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:32:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:32:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:32:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:32:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:32:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:32:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:32:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:32:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:32:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:32:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:32:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:32:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:32:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 20:32:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 20:32:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:32:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:32:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:32:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:32:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:32:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:32:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:32:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:32:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:32:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:32:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:32:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:32:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:32:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:32:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:32:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 20:32:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 20:32:19,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:32:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:32:19,811 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:32:19,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:32:20,595 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:32:21,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:32:21,133 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:32:21,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:32:21 BoogieIcfgContainer [2022-11-20 20:32:21,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:32:21,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:32:21,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:32:21,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:32:21,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:32:18" (1/3) ... [2022-11-20 20:32:21,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b638b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:32:21, skipping insertion in model container [2022-11-20 20:32:21,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:32:19" (2/3) ... [2022-11-20 20:32:21,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b638b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:32:21, skipping insertion in model container [2022-11-20 20:32:21,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:32:21" (3/3) ... [2022-11-20 20:32:21,148 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product38.cil.c [2022-11-20 20:32:21,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:32:21,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:32:21,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:32:21,245 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;@3fc8dbcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:32:21,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:32:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 92 states have internal predecessors, (119), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-20 20:32:21,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 20:32:21,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:32:21,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:32:21,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:32:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:32:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash 796888927, now seen corresponding path program 1 times [2022-11-20 20:32:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:32:21,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817282990] [2022-11-20 20:32:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:32:21,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:32:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:32:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:32:21,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:32:21,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817282990] [2022-11-20 20:32:21,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817282990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:32:21,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:32:21,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:32:21,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767945541] [2022-11-20 20:32:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:32:21,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:32:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:32:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:32:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:32:21,755 INFO L87 Difference]: Start difference. First operand has 156 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 92 states have internal predecessors, (119), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:32:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:32:21,939 INFO L93 Difference]: Finished difference Result 220 states and 297 transitions. [2022-11-20 20:32:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:32:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-20 20:32:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:32:21,958 INFO L225 Difference]: With dead ends: 220 [2022-11-20 20:32:21,963 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 20:32:21,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:32:21,974 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:32:21,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:32:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 20:32:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-20 20:32:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 89 states have internal predecessors, (113), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-20 20:32:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 206 transitions. [2022-11-20 20:32:22,066 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 206 transitions. Word has length 65 [2022-11-20 20:32:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:32:22,069 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 206 transitions. [2022-11-20 20:32:22,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:32:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 206 transitions. [2022-11-20 20:32:22,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 20:32:22,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:32:22,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:32:22,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:32:22,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:32:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:32:22,082 INFO L85 PathProgramCache]: Analyzing trace with hash -346291451, now seen corresponding path program 1 times [2022-11-20 20:32:22,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:32:22,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047706914] [2022-11-20 20:32:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:32:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:32:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:32:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:32:22,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:32:22,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047706914] [2022-11-20 20:32:22,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047706914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:32:22,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:32:22,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:32:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841347659] [2022-11-20 20:32:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:32:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:32:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:32:22,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:32:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:32:22,355 INFO L87 Difference]: Start difference. First operand 153 states and 206 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:32:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:32:22,467 INFO L93 Difference]: Finished difference Result 216 states and 282 transitions. [2022-11-20 20:32:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:32:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-20 20:32:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:32:22,470 INFO L225 Difference]: With dead ends: 216 [2022-11-20 20:32:22,471 INFO L226 Difference]: Without dead ends: 155 [2022-11-20 20:32:22,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:32:22,473 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:32:22,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:32:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-20 20:32:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-20 20:32:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 91 states have internal predecessors, (115), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-20 20:32:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 208 transitions. [2022-11-20 20:32:22,491 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 208 transitions. Word has length 66 [2022-11-20 20:32:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:32:22,491 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 208 transitions. [2022-11-20 20:32:22,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:32:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 208 transitions. [2022-11-20 20:32:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 20:32:22,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:32:22,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:32:22,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:32:22,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:32:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:32:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1717083453, now seen corresponding path program 1 times [2022-11-20 20:32:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:32:22,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470808127] [2022-11-20 20:32:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:32:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:32:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:32:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:32:22,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:32:22,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470808127] [2022-11-20 20:32:22,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470808127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:32:22,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:32:22,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:32:22,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068440456] [2022-11-20 20:32:22,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:32:22,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:32:22,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:32:22,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:32:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:32:22,730 INFO L87 Difference]: Start difference. First operand 155 states and 208 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:32:22,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:32:22,899 INFO L93 Difference]: Finished difference Result 345 states and 483 transitions. [2022-11-20 20:32:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:32:22,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-11-20 20:32:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:32:22,911 INFO L225 Difference]: With dead ends: 345 [2022-11-20 20:32:22,911 INFO L226 Difference]: Without dead ends: 208 [2022-11-20 20:32:22,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:32:22,919 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 59 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:32:22,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 373 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:32:22,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-20 20:32:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2022-11-20 20:32:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 123 states have (on average 1.3821138211382114) internal successors, (170), 125 states have internal predecessors, (170), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 20:32:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2022-11-20 20:32:22,970 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 71 [2022-11-20 20:32:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:32:22,973 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2022-11-20 20:32:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:32:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2022-11-20 20:32:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 20:32:22,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:32:22,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:32:22,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:32:22,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:32:22,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:32:22,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1153265287, now seen corresponding path program 1 times [2022-11-20 20:32:22,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:32:22,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931169685] [2022-11-20 20:32:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:32:22,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:32:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:32:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:32:23,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:32:23,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931169685] [2022-11-20 20:32:23,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931169685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:32:23,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816000764] [2022-11-20 20:32:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:32:23,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:32:23,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:32:23,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:32:23,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:32:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:32:23,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:32:23,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:32:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:32:23,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:32:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:32:23,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816000764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:32:23,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577534588] [2022-11-20 20:32:23,853 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-20 20:32:23,853 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:32:23,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:32:23,865 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:32:23,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:32:51,577 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:32:51,898 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:32:52,220 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 244 for LOIs [2022-11-20 20:32:53,914 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 246 for LOIs [2022-11-20 20:32:54,831 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 226 for LOIs [2022-11-20 20:32:54,900 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 249 for LOIs [2022-11-20 20:32:57,731 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 237 for LOIs [2022-11-20 20:32:57,768 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-11-20 20:32:59,994 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-20 20:33:00,065 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:33:12,988 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:18,520 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:32,794 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 470 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:38,176 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 482 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:56,290 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 514 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:18,123 WARN L233 SmtUtils]: Spent 21.50s on a formula simplification. DAG size of input: 585 DAG size of output: 454 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:42,281 WARN L233 SmtUtils]: Spent 13.88s on a formula simplification. DAG size of input: 472 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:35:19,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1577534588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:19,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:35:19,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-11-20 20:35:19,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133224561] [2022-11-20 20:35:19,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 20:35:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 20:35:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2407, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 20:35:19,324 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 28 states have internal predecessors, (36), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-20 20:35:33,041 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 580 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:35:44,292 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 582 DAG size of output: 423 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:36:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:36:01,834 INFO L93 Difference]: Finished difference Result 482 states and 721 transitions. [2022-11-20 20:36:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 20:36:01,835 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 28 states have internal predecessors, (36), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 72 [2022-11-20 20:36:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:36:01,837 INFO L225 Difference]: With dead ends: 482 [2022-11-20 20:36:01,837 INFO L226 Difference]: Without dead ends: 297 [2022-11-20 20:36:01,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 163.1s TimeCoverageRelationStatistics Valid=171, Invalid=2799, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 20:36:01,840 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 88 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 4810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:36:01,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 4312 Invalid, 4810 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2022-11-20 20:36:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-20 20:36:02,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 257. [2022-11-20 20:36:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 163 states have (on average 1.3680981595092025) internal successors, (223), 166 states have internal predecessors, (223), 69 states have call successors, (69), 26 states have call predecessors, (69), 24 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-20 20:36:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 360 transitions. [2022-11-20 20:36:02,006 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 360 transitions. Word has length 72 [2022-11-20 20:36:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:36:02,007 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 360 transitions. [2022-11-20 20:36:02,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 28 states have internal predecessors, (36), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-20 20:36:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 360 transitions. [2022-11-20 20:36:02,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 20:36:02,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:36:02,010 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:36:02,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:36:02,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:36:02,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:36:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:36:02,219 INFO L85 PathProgramCache]: Analyzing trace with hash 58967317, now seen corresponding path program 1 times [2022-11-20 20:36:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:36:02,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906153626] [2022-11-20 20:36:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:36:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:36:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:36:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:36:02,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:36:02,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906153626] [2022-11-20 20:36:02,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906153626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:36:02,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:36:02,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:36:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857149923] [2022-11-20 20:36:02,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:36:02,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:36:02,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:36:02,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:36:02,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:36:02,306 INFO L87 Difference]: Start difference. First operand 257 states and 360 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:36:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:36:02,610 INFO L93 Difference]: Finished difference Result 616 states and 900 transitions. [2022-11-20 20:36:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:36:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-20 20:36:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:36:02,613 INFO L225 Difference]: With dead ends: 616 [2022-11-20 20:36:02,614 INFO L226 Difference]: Without dead ends: 385 [2022-11-20 20:36:02,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:36:02,616 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 57 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:36:02,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 385 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:36:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-20 20:36:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 378. [2022-11-20 20:36:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 253 states have (on average 1.434782608695652) internal successors, (363), 256 states have internal predecessors, (363), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (99), 95 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-20 20:36:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 562 transitions. [2022-11-20 20:36:02,787 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 562 transitions. Word has length 77 [2022-11-20 20:36:02,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:36:02,788 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 562 transitions. [2022-11-20 20:36:02,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 20:36:02,788 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 562 transitions. [2022-11-20 20:36:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 20:36:02,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:36:02,791 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:36:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:36:02,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:36:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:36:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -913865822, now seen corresponding path program 1 times [2022-11-20 20:36:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:36:02,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857686323] [2022-11-20 20:36:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:36:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:36:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:36:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:36:02,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:36:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857686323] [2022-11-20 20:36:02,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857686323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:36:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141861302] [2022-11-20 20:36:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:36:02,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:36:02,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:36:02,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:36:02,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:36:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:36:03,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:36:03,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:36:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:36:03,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:36:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:36:03,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141861302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:36:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1527950903] [2022-11-20 20:36:03,343 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-20 20:36:03,343 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:36:03,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:36:03,344 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:36:03,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:36:50,419 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-20 20:36:50,722 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-20 20:36:51,024 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:37:24,822 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 470 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:37:30,075 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 482 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:37:47,025 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 514 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:04,415 WARN L233 SmtUtils]: Spent 17.11s on a formula simplification. DAG size of input: 583 DAG size of output: 432 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:29,597 WARN L233 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 580 DAG size of output: 444 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:36,886 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 553 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:43,365 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 584 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:43,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1527950903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:43,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:38:43,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-20 20:38:43,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175994493] [2022-11-20 20:38:43,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:43,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:38:43,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:38:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:38:43,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-20 20:38:43,374 INFO L87 Difference]: Start difference. First operand 378 states and 562 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 20:38:58,887 WARN L233 SmtUtils]: Spent 13.88s on a formula simplification. DAG size of input: 511 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:39:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:28,049 INFO L93 Difference]: Finished difference Result 765 states and 1186 transitions. [2022-11-20 20:39:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 20:39:28,050 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 78 [2022-11-20 20:39:28,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:28,053 INFO L225 Difference]: With dead ends: 765 [2022-11-20 20:39:28,053 INFO L226 Difference]: Without dead ends: 480 [2022-11-20 20:39:28,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 146.9s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 20:39:28,055 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 157 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:39:28,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 2491 Invalid, 2054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-20 20:39:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-20 20:39:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 410. [2022-11-20 20:39:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 281 states have (on average 1.4377224199288257) internal successors, (404), 286 states have internal predecessors, (404), 103 states have call successors, (103), 27 states have call predecessors, (103), 25 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-20 20:39:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 609 transitions. [2022-11-20 20:39:28,313 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 609 transitions. Word has length 78 [2022-11-20 20:39:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:28,317 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 609 transitions. [2022-11-20 20:39:28,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 20:39:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 609 transitions. [2022-11-20 20:39:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 20:39:28,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:28,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:28,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:39:28,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:39:28,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1266890759, now seen corresponding path program 1 times [2022-11-20 20:39:28,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:39:28,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270917735] [2022-11-20 20:39:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:39:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:39:28,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:39:28,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270917735] [2022-11-20 20:39:28,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270917735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:39:28,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266266570] [2022-11-20 20:39:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:28,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:39:28,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:39:28,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:39:28,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:39:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:29,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:39:29,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:39:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:39:29,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:39:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:39:29,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266266570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:39:29,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [942405940] [2022-11-20 20:39:29,138 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-20 20:39:29,138 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:39:29,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:39:29,139 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:39:29,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:40:36,517 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-20 20:40:36,815 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 433 for LOIs [2022-11-20 20:40:37,121 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 452 for LOIs [2022-11-20 20:40:37,451 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 249 for LOIs [2022-11-20 20:40:37,532 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:40:37,828 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:41:08,875 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 470 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:41:14,177 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 482 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:41:31,264 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 514 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:41:49,542 WARN L233 SmtUtils]: Spent 17.97s on a formula simplification. DAG size of input: 623 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:42:10,651 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification. DAG size of input: 564 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:42:24,194 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 544 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:42:32,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [942405940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:42:32,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:42:32,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-20 20:42:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224415442] [2022-11-20 20:42:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:42:32,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 20:42:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:42:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 20:42:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 20:42:32,200 INFO L87 Difference]: Start difference. First operand 410 states and 609 transitions. Second operand has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-20 20:42:43,434 WARN L233 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 585 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:43:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:00,936 INFO L93 Difference]: Finished difference Result 850 states and 1330 transitions. [2022-11-20 20:43:00,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 20:43:00,937 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2022-11-20 20:43:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:00,940 INFO L225 Difference]: With dead ends: 850 [2022-11-20 20:43:00,940 INFO L226 Difference]: Without dead ends: 565 [2022-11-20 20:43:00,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 127.3s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 20:43:00,943 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 115 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:00,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 3599 Invalid, 3441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2022-11-20 20:43:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-20 20:43:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 455. [2022-11-20 20:43:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 319 states have (on average 1.438871473354232) internal successors, (459), 325 states have internal predecessors, (459), 107 states have call successors, (107), 30 states have call predecessors, (107), 28 states have return successors, (106), 99 states have call predecessors, (106), 106 states have call successors, (106) [2022-11-20 20:43:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 672 transitions. [2022-11-20 20:43:01,303 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 672 transitions. Word has length 81 [2022-11-20 20:43:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:01,304 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 672 transitions. [2022-11-20 20:43:01,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-20 20:43:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 672 transitions. [2022-11-20 20:43:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 20:43:01,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:01,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:01,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:43:01,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:01,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:01,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -868906455, now seen corresponding path program 1 times [2022-11-20 20:43:01,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:01,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147763429] [2022-11-20 20:43:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:01,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:43:01,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:01,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147763429] [2022-11-20 20:43:01,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147763429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:43:01,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922387333] [2022-11-20 20:43:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:01,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:01,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:01,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4621f2fd-6d68-4338-ac7c-28424134dd57/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:43:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:02,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:43:02,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:43:02,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:43:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:43:02,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922387333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:43:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537238533] [2022-11-20 20:43:02,136 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-20 20:43:02,137 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:43:02,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:43:02,138 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:43:02,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:43:47,318 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:43:47,664 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:43:48,037 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:44:02,351 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:44:08,899 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:44:23,356 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 470 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:44:28,689 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 482 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:44:45,959 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 514 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:44:58,917 WARN L233 SmtUtils]: Spent 12.65s on a formula simplification. DAG size of input: 605 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:45:21,694 WARN L233 SmtUtils]: Spent 22.38s on a formula simplification. DAG size of input: 607 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:45:42,985 WARN L233 SmtUtils]: Spent 20.90s on a formula simplification. DAG size of input: 606 DAG size of output: 480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)