./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product32.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_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/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_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/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_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/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 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e --- 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 20:59:39,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:59:39,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:59:39,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:59:39,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:59:39,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:59:39,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:59:39,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:59:39,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:59:39,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:59:39,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:59:39,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:59:39,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:59:39,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:59:39,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:59:39,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:59:39,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:59:39,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:59:39,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:59:39,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:59:39,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:59:39,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:59:39,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:59:39,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:59:39,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:59:39,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:59:39,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:59:39,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:59:39,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:59:39,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:59:39,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:59:39,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:59:39,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:59:39,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:59:39,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:59:39,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:59:39,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:59:39,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:59:39,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:59:39,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:59:39,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:59:39,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:59:39,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:59:39,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:59:39,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:59:39,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:59:39,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:59:39,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:59:39,335 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:59:39,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:59:39,336 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:59:39,336 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:59:39,336 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:59:39,337 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:59:39,337 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:59:39,337 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:59:39,338 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:59:39,338 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:59:39,338 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:59:39,338 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:59:39,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:59:39,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:59:39,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:59:39,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:59:39,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:59:39,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:59:39,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:59:39,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:59:39,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:59:39,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:59:39,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:59:39,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:59:39,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:59:39,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:59:39,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:59:39,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:59:39,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:59:39,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:59:39,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:59:39,344 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:59:39,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:59:39,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:59:39,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:59:39,345 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_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e [2022-11-20 20:59:39,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:59:39,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:59:39,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:59:39,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:59:39,622 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:59:39,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2022-11-20 20:59:42,653 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:59:43,113 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:59:43,114 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2022-11-20 20:59:43,142 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/data/e8072763b/d1fd5fbaef0945f8a3d1bdd36124cf32/FLAG1556453ac [2022-11-20 20:59:43,160 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/data/e8072763b/d1fd5fbaef0945f8a3d1bdd36124cf32 [2022-11-20 20:59:43,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:59:43,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:59:43,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:59:43,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:59:43,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:59:43,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:59:43" (1/1) ... [2022-11-20 20:59:43,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e6b88f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:43, skipping insertion in model container [2022-11-20 20:59:43,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:59:43" (1/1) ... [2022-11-20 20:59:43,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:59:43,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:59:44,016 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_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2022-11-20 20:59:44,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:59:44,032 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:59:44,117 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_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2022-11-20 20:59:44,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:59:44,149 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:59:44,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44 WrapperNode [2022-11-20 20:59:44,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:59:44,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:59:44,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:59:44,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:59:44,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,262 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 987 [2022-11-20 20:59:44,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:59:44,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:59:44,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:59:44,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:59:44,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:59:44,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:59:44,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:59:44,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:59:44,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (1/1) ... [2022-11-20 20:59:44,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:59:44,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:59:44,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:59:44,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:59:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:59:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:59:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 20:59:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 20:59:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:59:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:59:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 20:59:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 20:59:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:59:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:59:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:59:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:59:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-20 20:59:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-20 20:59:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:59:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:59:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:59:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:59:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:59:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:59:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:59:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:59:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:59:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:59:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:59:44,444 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:59:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:59:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:59:44,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:59:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:59:44,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:59:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:59:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:59:44,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:59:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:59:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:59:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 20:59:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 20:59:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:59:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:59:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:59:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:59:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:59:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:59:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 20:59:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 20:59:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:59:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:59:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:59:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:59:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:59:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:59:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:59:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:59:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:59:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:59:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:59:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 20:59:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 20:59:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:59:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:59:44,735 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:59:44,737 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:59:45,700 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:59:46,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:59:46,411 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:59:46,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:59:46 BoogieIcfgContainer [2022-11-20 20:59:46,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:59:46,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:59:46,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:59:46,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:59:46,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:59:43" (1/3) ... [2022-11-20 20:59:46,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed9685e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:59:46, skipping insertion in model container [2022-11-20 20:59:46,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:44" (2/3) ... [2022-11-20 20:59:46,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed9685e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:59:46, skipping insertion in model container [2022-11-20 20:59:46,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:59:46" (3/3) ... [2022-11-20 20:59:46,425 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product32.cil.c [2022-11-20 20:59:46,444 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:59:46,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:59:46,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:59:46,520 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;@3e09a5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:59:46,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:59:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-20 20:59:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 20:59:46,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:46,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:59:46,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1548688865, now seen corresponding path program 1 times [2022-11-20 20:59:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64884584] [2022-11-20 20:59:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:59:46,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64884584] [2022-11-20 20:59:46,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64884584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:59:46,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:59:46,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:59:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376419081] [2022-11-20 20:59:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:59:46,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:59:46,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:59:47,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:59:47,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:59:47,010 INFO L87 Difference]: Start difference. First operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 20:59:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:47,184 INFO L93 Difference]: Finished difference Result 346 states and 455 transitions. [2022-11-20 20:59:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:59:47,188 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-20 20:59:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:47,207 INFO L225 Difference]: With dead ends: 346 [2022-11-20 20:59:47,208 INFO L226 Difference]: Without dead ends: 216 [2022-11-20 20:59:47,217 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 20:59:47,220 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:47,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:59:47,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-20 20:59:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-20 20:59:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.278688524590164) internal successors, (156), 126 states have internal predecessors, (156), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-20 20:59:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2022-11-20 20:59:47,312 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 71 [2022-11-20 20:59:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:47,314 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2022-11-20 20:59:47,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 20:59:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2022-11-20 20:59:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 20:59:47,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:47,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 20:59:47,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:59:47,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2058665022, now seen corresponding path program 1 times [2022-11-20 20:59:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:47,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040487714] [2022-11-20 20:59:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:59:47,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:47,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040487714] [2022-11-20 20:59:47,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040487714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:59:47,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:59:47,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:59:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536993297] [2022-11-20 20:59:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:59:47,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:59:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:59:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:59:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:59:47,597 INFO L87 Difference]: Start difference. First operand 216 states and 285 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, (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 20:59:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:47,801 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2022-11-20 20:59:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:59:47,802 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-20 20:59:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:47,812 INFO L225 Difference]: With dead ends: 342 [2022-11-20 20:59:47,812 INFO L226 Difference]: Without dead ends: 218 [2022-11-20 20:59:47,816 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 20:59:47,818 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:47,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:59:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-20 20:59:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-20 20:59:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-20 20:59:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 287 transitions. [2022-11-20 20:59:47,842 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 287 transitions. Word has length 72 [2022-11-20 20:59:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:47,842 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 287 transitions. [2022-11-20 20:59:47,843 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, (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 20:59:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 287 transitions. [2022-11-20 20:59:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 20:59:47,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:47,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:59:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:59:47,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 523395938, now seen corresponding path program 1 times [2022-11-20 20:59:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:47,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809000296] [2022-11-20 20:59:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:59:47,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:47,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809000296] [2022-11-20 20:59:47,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809000296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:59:47,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:59:47,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:59:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039138181] [2022-11-20 20:59:47,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:59:47,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:59:47,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:59:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:59:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:59:47,964 INFO L87 Difference]: Start difference. First operand 218 states and 287 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 20:59:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:48,089 INFO L93 Difference]: Finished difference Result 471 states and 641 transitions. [2022-11-20 20:59:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:59:48,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 20:59:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:48,092 INFO L225 Difference]: With dead ends: 471 [2022-11-20 20:59:48,092 INFO L226 Difference]: Without dead ends: 271 [2022-11-20 20:59:48,093 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 20:59:48,094 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 59 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:48,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 507 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:59:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-20 20:59:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2022-11-20 20:59:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 162 states have internal predecessors, (213), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-20 20:59:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2022-11-20 20:59:48,119 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 77 [2022-11-20 20:59:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:48,119 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2022-11-20 20:59:48,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 20:59:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2022-11-20 20:59:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 20:59:48,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:48,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:59:48,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:59:48,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1007181635, now seen corresponding path program 1 times [2022-11-20 20:59:48,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:48,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924114762] [2022-11-20 20:59:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:59:48,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:48,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924114762] [2022-11-20 20:59:48,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924114762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:59:48,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088171736] [2022-11-20 20:59:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:48,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:59:48,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:59:48,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:59:48,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:59:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:48,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:59:48,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:59:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:59:48,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:59:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:59:49,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088171736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:59:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49560981] [2022-11-20 20:59:49,056 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-20 20:59:49,060 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:59:49,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:59:49,069 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:59:49,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:00:31,741 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 21:00:32,029 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 482 for LOIs [2022-11-20 21:01:16,140 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-11-20 21:01:16,490 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 21:01:16,892 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 480 for LOIs [2022-11-20 21:01:26,095 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 438 for LOIs [2022-11-20 21:01:26,421 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 282 for LOIs [2022-11-20 21:01:33,849 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-11-20 21:01:33,929 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 249 for LOIs [2022-11-20 21:01:33,979 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 453 for LOIs [2022-11-20 21:01:34,769 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 257 for LOIs [2022-11-20 21:01:34,830 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:02:20,698 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 490 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:27,439 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 502 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:37,463 WARN L233 SmtUtils]: Spent 8.51s on a formula simplification. DAG size of input: 512 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:51,810 WARN L233 SmtUtils]: Spent 13.96s on a formula simplification. DAG size of input: 596 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:59,929 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 564 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:07,680 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 566 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:13,641 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 568 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:19,701 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 564 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:29,391 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 565 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:35,590 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 482 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:41,986 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 496 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:59,841 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 547 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:04:17,317 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 543 DAG size of output: 295 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:04:24,470 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 556 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:04:41,759 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 438 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:04:49,176 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 464 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:05:21,392 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 474 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:05:33,473 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 480 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:05:40,412 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 482 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:05:48,654 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 524 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:05:53,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [49560981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:05:53,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:05:53,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-20 21:05:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772830677] [2022-11-20 21:05:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:05:53,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-20 21:05:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:05:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-20 21:05:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=3383, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 21:05:53,298 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 55 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 33 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 21:06:02,021 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 488 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:06:07,561 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 427 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:06:13,395 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 462 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:06:19,192 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 458 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:06:25,261 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 465 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:07:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:40,924 INFO L93 Difference]: Finished difference Result 713 states and 1080 transitions. [2022-11-20 21:07:40,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-20 21:07:40,925 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 33 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2022-11-20 21:07:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:40,929 INFO L225 Difference]: With dead ends: 713 [2022-11-20 21:07:40,929 INFO L226 Difference]: Without dead ends: 465 [2022-11-20 21:07:40,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 321.0s TimeCoverageRelationStatistics Valid=257, Invalid=5145, Unknown=0, NotChecked=0, Total=5402 [2022-11-20 21:07:40,934 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 364 mSDsluCounter, 6935 mSDsCounter, 0 mSdLazyCounter, 8824 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 8866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 8824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:40,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 7242 Invalid, 8866 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [42 Valid, 8824 Invalid, 0 Unknown, 0 Unchecked, 44.1s Time] [2022-11-20 21:07:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-11-20 21:07:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 363. [2022-11-20 21:07:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 238 states have (on average 1.403361344537815) internal successors, (334), 242 states have internal predecessors, (334), 89 states have call successors, (89), 38 states have call predecessors, (89), 35 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-20 21:07:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 511 transitions. [2022-11-20 21:07:41,195 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 511 transitions. Word has length 78 [2022-11-20 21:07:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:41,196 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 511 transitions. [2022-11-20 21:07:41,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 33 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 21:07:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 511 transitions. [2022-11-20 21:07:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 21:07:41,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:41,204 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:41,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:41,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:07:41,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:41,406 INFO L85 PathProgramCache]: Analyzing trace with hash -224052683, now seen corresponding path program 1 times [2022-11-20 21:07:41,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:07:41,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460766944] [2022-11-20 21:07:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:41,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:07:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:07:41,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:07:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460766944] [2022-11-20 21:07:41,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460766944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:41,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:41,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:07:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691772230] [2022-11-20 21:07:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:41,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:07:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:07:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:07:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:07:41,523 INFO L87 Difference]: Start difference. First operand 363 states and 511 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 21:07:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:41,953 INFO L93 Difference]: Finished difference Result 813 states and 1178 transitions. [2022-11-20 21:07:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:07:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-20 21:07:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:41,961 INFO L225 Difference]: With dead ends: 813 [2022-11-20 21:07:41,961 INFO L226 Difference]: Without dead ends: 488 [2022-11-20 21:07:41,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:07:41,971 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 57 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:41,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 515 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:07:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-20 21:07:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 481. [2022-11-20 21:07:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 325 states have (on average 1.44) internal successors, (468), 329 states have internal predecessors, (468), 120 states have call successors, (120), 38 states have call predecessors, (120), 35 states have return successors, (119), 115 states have call predecessors, (119), 119 states have call successors, (119) [2022-11-20 21:07:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 707 transitions. [2022-11-20 21:07:42,252 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 707 transitions. Word has length 83 [2022-11-20 21:07:42,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:42,253 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 707 transitions. [2022-11-20 21:07:42,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 21:07:42,253 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 707 transitions. [2022-11-20 21:07:42,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 21:07:42,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:42,257 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:42,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:07:42,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2120714797, now seen corresponding path program 1 times [2022-11-20 21:07:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:07:42,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535338309] [2022-11-20 21:07:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:07:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:07:42,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:07:42,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535338309] [2022-11-20 21:07:42,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535338309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:07:42,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227675048] [2022-11-20 21:07:42,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:42,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:07:42,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:07:42,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:07:42,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5c2cd6-c718-4fb2-96be-6e6ea27e1f00/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:07:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:42,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:07:42,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:07:42,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:07:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:07:42,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227675048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:07:42,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1727784397] [2022-11-20 21:07:42,980 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-20 21:07:42,980 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:07:42,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:07:42,982 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:07:42,982 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:08:28,278 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-20 21:08:28,644 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 269 for LOIs [2022-11-20 21:08:31,003 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-20 21:08:31,087 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-20 21:08:31,497 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-11-20 21:08:35,252 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 227 for LOIs [2022-11-20 21:08:35,301 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 279 for LOIs [2022-11-20 21:08:43,002 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-20 21:08:43,088 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-11-20 21:08:43,138 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 479 for LOIs [2022-11-20 21:08:45,414 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-11-20 21:08:45,476 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:09:18,496 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 468 DAG size of output: 261 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:32,601 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 490 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:39,500 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 502 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:09:49,285 WARN L233 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 512 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:10:02,161 WARN L233 SmtUtils]: Spent 12.47s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:10:25,925 WARN L233 SmtUtils]: Spent 23.34s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:10:48,293 WARN L233 SmtUtils]: Spent 21.98s on a formula simplification. DAG size of input: 588 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:11:08,877 WARN L233 SmtUtils]: Spent 20.18s on a formula simplification. DAG size of input: 586 DAG size of output: 459 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:11:19,919 WARN L233 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 585 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:11:35,315 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 479 DAG size of output: 279 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:12:39,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1727784397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:39,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:12:39,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-11-20 21:12:39,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041157515] [2022-11-20 21:12:39,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:39,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-20 21:12:39,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:39,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-20 21:12:39,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=3745, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 21:12:39,943 INFO L87 Difference]: Start difference. First operand 481 states and 707 transitions. Second operand has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 21:13:06,802 WARN L233 SmtUtils]: Spent 17.73s on a formula simplification. DAG size of input: 500 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)