./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS --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 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e --- 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-8393723 [2022-11-19 07:42:48,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:42:48,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:42:48,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:42:48,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:42:48,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:42:48,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:42:48,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:42:48,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:42:48,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:42:48,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:42:48,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:42:48,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:42:48,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:42:48,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:42:48,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:42:48,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:42:48,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:42:48,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:42:48,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:42:48,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:42:48,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:42:48,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:42:48,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:42:48,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:42:48,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:42:48,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:42:48,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:42:48,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:42:48,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:42:48,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:42:48,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:42:48,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:42:48,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:42:48,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:42:48,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:42:48,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:42:48,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:42:48,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:42:48,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:42:48,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:42:48,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:42:48,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:42:48,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:42:48,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:42:48,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:42:48,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:42:48,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:42:48,332 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:42:48,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:42:48,332 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:42:48,332 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:42:48,333 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:42:48,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:42:48,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:42:48,334 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:42:48,334 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:42:48,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:42:48,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:42:48,335 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:42:48,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:42:48,336 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:42:48,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:42:48,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:42:48,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:42:48,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:42:48,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:42:48,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:42:48,338 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:42:48,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:42:48,338 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:42:48,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:42:48,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:42:48,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:42:48,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:42:48,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:42:48,340 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:42:48,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:42:48,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:42:48,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:42:48,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:42:48,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:42:48,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:42:48,342 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_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e [2022-11-19 07:42:48,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:42:48,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:42:48,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:42:48,643 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:42:48,644 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:42:48,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2022-11-19 07:42:48,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/data/ee42451b2/bf332133311046fdb084f26e75795b99/FLAGb2c0b1d91 [2022-11-19 07:42:49,263 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:42:49,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2022-11-19 07:42:49,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/data/ee42451b2/bf332133311046fdb084f26e75795b99/FLAGb2c0b1d91 [2022-11-19 07:42:49,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/data/ee42451b2/bf332133311046fdb084f26e75795b99 [2022-11-19 07:42:49,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:42:49,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:42:49,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:42:49,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:42:49,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:42:49,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:49" (1/1) ... [2022-11-19 07:42:49,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2430c2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:49, skipping insertion in model container [2022-11-19 07:42:49,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:49" (1/1) ... [2022-11-19 07:42:49,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:42:49,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:42:50,291 WARN L234 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_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c[54831,54844] [2022-11-19 07:42:50,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:42:50,337 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:42:50,494 WARN L234 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_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c[54831,54844] [2022-11-19 07:42:50,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:42:50,544 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:42:50,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50 WrapperNode [2022-11-19 07:42:50,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:42:50,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:42:50,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:42:50,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:42:50,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,628 INFO L138 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 46, calls inlined = 40, statements flattened = 735 [2022-11-19 07:42:50,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:42:50,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:42:50,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:42:50,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:42:50,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,675 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:42:50,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:42:50,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:42:50,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:42:50,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (1/1) ... [2022-11-19 07:42:50,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:42:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:42:50,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:42:50,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:42:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:42:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:42:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:42:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:42:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:42:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:42:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:42:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:42:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:42:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:42:50,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:42:50,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:42:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:42:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:42:50,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:42:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:42:50,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:42:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:42:50,790 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:42:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:42:50,790 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:42:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:42:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:42:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:42:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:42:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:42:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:42:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:42:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:42:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:42:51,134 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:42:51,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:42:51,769 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:42:52,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:42:52,069 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:42:52,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52 BoogieIcfgContainer [2022-11-19 07:42:52,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:42:52,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:42:52,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:42:52,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:42:52,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:49" (1/3) ... [2022-11-19 07:42:52,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40365b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:52, skipping insertion in model container [2022-11-19 07:42:52,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:50" (2/3) ... [2022-11-19 07:42:52,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40365b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:52, skipping insertion in model container [2022-11-19 07:42:52,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52" (3/3) ... [2022-11-19 07:42:52,085 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product08.cil.c [2022-11-19 07:42:52,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:42:52,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:42:52,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:42:52,191 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;@19bcb0d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:42:52,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:42:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-19 07:42:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 07:42:52,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:52,208 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] [2022-11-19 07:42:52,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:52,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1294955613, now seen corresponding path program 1 times [2022-11-19 07:42:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:52,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528083379] [2022-11-19 07:42:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:42:52,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528083379] [2022-11-19 07:42:52,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528083379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:52,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:52,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:42:52,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209917858] [2022-11-19 07:42:52,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:52,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:42:52,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:42:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:42:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:42:52,637 INFO L87 Difference]: Start difference. First operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:42:52,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:52,730 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2022-11-19 07:42:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:42:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2022-11-19 07:42:52,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:52,741 INFO L225 Difference]: With dead ends: 169 [2022-11-19 07:42:52,742 INFO L226 Difference]: Without dead ends: 123 [2022-11-19 07:42:52,745 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 [2022-11-19 07:42:52,748 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:52,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:42:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-19 07:42:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-11-19 07:42:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.337837837837838) internal successors, (99), 75 states have internal predecessors, (99), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-19 07:42:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 166 transitions. [2022-11-19 07:42:52,799 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 166 transitions. Word has length 54 [2022-11-19 07:42:52,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:52,801 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 166 transitions. [2022-11-19 07:42:52,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:42:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 166 transitions. [2022-11-19 07:42:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 07:42:52,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:52,805 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] [2022-11-19 07:42:52,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:42:52,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash 523327974, now seen corresponding path program 1 times [2022-11-19 07:42:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:52,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324290499] [2022-11-19 07:42:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:42:53,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:53,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324290499] [2022-11-19 07:42:53,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324290499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:53,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:53,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:42:53,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779541763] [2022-11-19 07:42:53,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:53,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:42:53,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:42:53,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:42:53,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:42:53,076 INFO L87 Difference]: Start difference. First operand 123 states and 166 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:42:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:53,170 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2022-11-19 07:42:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:42:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 55 [2022-11-19 07:42:53,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:53,173 INFO L225 Difference]: With dead ends: 165 [2022-11-19 07:42:53,173 INFO L226 Difference]: Without dead ends: 125 [2022-11-19 07:42:53,174 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 [2022-11-19 07:42:53,175 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:53,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 287 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:42:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-19 07:42:53,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-19 07:42:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 77 states have internal predecessors, (101), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-19 07:42:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 168 transitions. [2022-11-19 07:42:53,212 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 168 transitions. Word has length 55 [2022-11-19 07:42:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:53,213 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 168 transitions. [2022-11-19 07:42:53,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:42:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 168 transitions. [2022-11-19 07:42:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:42:53,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:53,221 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] [2022-11-19 07:42:53,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:42:53,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1591390782, now seen corresponding path program 1 times [2022-11-19 07:42:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48485006] [2022-11-19 07:42:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:53,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:42:53,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:53,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48485006] [2022-11-19 07:42:53,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48485006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:53,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:53,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:42:53,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210331958] [2022-11-19 07:42:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:53,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:42:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:42:53,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:42:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:42:53,398 INFO L87 Difference]: Start difference. First operand 125 states and 168 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:42:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:53,554 INFO L93 Difference]: Finished difference Result 280 states and 395 transitions. [2022-11-19 07:42:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:42:53,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2022-11-19 07:42:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:53,557 INFO L225 Difference]: With dead ends: 280 [2022-11-19 07:42:53,557 INFO L226 Difference]: Without dead ends: 173 [2022-11-19 07:42:53,558 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 [2022-11-19 07:42:53,559 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 57 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:53,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 299 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:42:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-19 07:42:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2022-11-19 07:42:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 109 states have internal predecessors, (154), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-19 07:42:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 243 transitions. [2022-11-19 07:42:53,580 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 243 transitions. Word has length 60 [2022-11-19 07:42:53,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:53,580 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 243 transitions. [2022-11-19 07:42:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:42:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 243 transitions. [2022-11-19 07:42:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:42:53,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:53,584 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] [2022-11-19 07:42:53,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:42:53,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash -794552079, now seen corresponding path program 1 times [2022-11-19 07:42:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:53,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38607708] [2022-11-19 07:42:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:42:53,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38607708] [2022-11-19 07:42:53,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38607708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:42:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524754856] [2022-11-19 07:42:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:53,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:42:53,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:42:53,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:42:53,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:42:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:54,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:42:54,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:42:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:42:54,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:42:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:42:54,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524754856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:42:54,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [668564058] [2022-11-19 07:42:54,322 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-19 07:42:54,322 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:42:54,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:42:54,333 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:42:54,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:43:23,126 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:43:23,442 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:43:23,785 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-11-19 07:43:25,473 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-11-19 07:43:25,540 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-11-19 07:43:29,539 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-11-19 07:43:29,576 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-11-19 07:43:29,616 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-19 07:43:34,900 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:43:52,534 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:06,349 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 470 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:17,573 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 492 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:29,318 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 514 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:44,884 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 469 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:51,708 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 491 DAG size of output: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:14,400 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 497 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:26,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [668564058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:26,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:45:26,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-19 07:45:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051482142] [2022-11-19 07:45:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-19 07:45:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-19 07:45:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2215, Unknown=0, NotChecked=0, Total=2352 [2022-11-19 07:45:26,612 INFO L87 Difference]: Start difference. First operand 168 states and 243 transitions. Second operand has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:46:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:15,940 INFO L93 Difference]: Finished difference Result 504 states and 799 transitions. [2022-11-19 07:46:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-19 07:46:15,941 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 61 [2022-11-19 07:46:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:15,947 INFO L225 Difference]: With dead ends: 504 [2022-11-19 07:46:15,947 INFO L226 Difference]: Without dead ends: 354 [2022-11-19 07:46:15,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 141.5s TimeCoverageRelationStatistics Valid=198, Invalid=2994, Unknown=0, NotChecked=0, Total=3192 [2022-11-19 07:46:15,953 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 288 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 5049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:15,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 3760 Invalid, 5049 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [32 Valid, 5017 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2022-11-19 07:46:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-19 07:46:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 259. [2022-11-19 07:46:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 186 states have (on average 1.4838709677419355) internal successors, (276), 188 states have internal predecessors, (276), 52 states have call successors, (52), 21 states have call predecessors, (52), 20 states have return successors, (52), 49 states have call predecessors, (52), 51 states have call successors, (52) [2022-11-19 07:46:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 380 transitions. [2022-11-19 07:46:16,108 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 380 transitions. Word has length 61 [2022-11-19 07:46:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:16,109 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 380 transitions. [2022-11-19 07:46:16,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:46:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 380 transitions. [2022-11-19 07:46:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:46:16,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:16,112 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] [2022-11-19 07:46:16,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:46:16,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-19 07:46:16,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 850442994, now seen corresponding path program 1 times [2022-11-19 07:46:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:16,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341340817] [2022-11-19 07:46:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:16,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:46:16,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:16,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341340817] [2022-11-19 07:46:16,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341340817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:16,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:16,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:16,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723049957] [2022-11-19 07:46:16,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:16,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:16,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:16,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:16,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:16,473 INFO L87 Difference]: Start difference. First operand 259 states and 380 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:46:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:16,792 INFO L93 Difference]: Finished difference Result 591 states and 894 transitions. [2022-11-19 07:46:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:46:16,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-19 07:46:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:16,797 INFO L225 Difference]: With dead ends: 591 [2022-11-19 07:46:16,797 INFO L226 Difference]: Without dead ends: 374 [2022-11-19 07:46:16,798 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 [2022-11-19 07:46:16,801 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 55 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:16,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 318 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:46:16,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-19 07:46:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 367. [2022-11-19 07:46:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 269 states have (on average 1.5092936802973977) internal successors, (406), 271 states have internal predecessors, (406), 77 states have call successors, (77), 21 states have call predecessors, (77), 20 states have return successors, (77), 74 states have call predecessors, (77), 76 states have call successors, (77) [2022-11-19 07:46:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 560 transitions. [2022-11-19 07:46:17,023 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 560 transitions. Word has length 66 [2022-11-19 07:46:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:17,024 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 560 transitions. [2022-11-19 07:46:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:46:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 560 transitions. [2022-11-19 07:46:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:46:17,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:17,028 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] [2022-11-19 07:46:17,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:46:17,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash 804648446, now seen corresponding path program 1 times [2022-11-19 07:46:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:17,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265915333] [2022-11-19 07:46:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:17,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:46:17,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:17,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265915333] [2022-11-19 07:46:17,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265915333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:46:17,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139732944] [2022-11-19 07:46:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:17,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:17,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:17,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:17,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:46:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:46:17,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:46:17,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:46:17,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139732944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:17,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [722108119] [2022-11-19 07:46:17,527 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-19 07:46:17,528 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:46:17,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:46:17,529 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:46:17,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:47:02,659 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-19 07:47:02,969 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:47:03,283 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:47:36,787 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 470 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:48,066 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 492 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:59,903 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 514 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:12,715 WARN L233 SmtUtils]: Spent 12.51s on a formula simplification. DAG size of input: 583 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:33,523 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 553 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:42,546 WARN L233 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 584 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:42,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [722108119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:42,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:48:42,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 07:48:42,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786763696] [2022-11-19 07:48:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:42,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:48:42,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:42,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:48:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:48:42,732 INFO L87 Difference]: Start difference. First operand 367 states and 560 transitions. Second operand has 25 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-19 07:49:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:17,799 INFO L93 Difference]: Finished difference Result 714 states and 1131 transitions. [2022-11-19 07:49:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 07:49:17,800 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 67 [2022-11-19 07:49:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:17,803 INFO L225 Difference]: With dead ends: 714 [2022-11-19 07:49:17,803 INFO L226 Difference]: Without dead ends: 474 [2022-11-19 07:49:17,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 124.9s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 07:49:17,805 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 210 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:17,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2310 Invalid, 2167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-19 07:49:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-19 07:49:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 423. [2022-11-19 07:49:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 322 states have (on average 1.5217391304347827) internal successors, (490), 325 states have internal predecessors, (490), 79 states have call successors, (79), 22 states have call predecessors, (79), 21 states have return successors, (79), 75 states have call predecessors, (79), 78 states have call successors, (79) [2022-11-19 07:49:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 648 transitions. [2022-11-19 07:49:18,041 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 648 transitions. Word has length 67 [2022-11-19 07:49:18,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:18,041 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 648 transitions. [2022-11-19 07:49:18,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-19 07:49:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 648 transitions. [2022-11-19 07:49:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:49:18,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:18,045 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] [2022-11-19 07:49:18,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:49:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:18,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:18,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1218102706, now seen corresponding path program 1 times [2022-11-19 07:49:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353603873] [2022-11-19 07:49:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:49:18,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:18,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353603873] [2022-11-19 07:49:18,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353603873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:18,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512511031] [2022-11-19 07:49:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:18,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:18,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:18,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:18,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:49:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:18,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:49:18,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:49:18,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:49:18,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512511031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [392022491] [2022-11-19 07:49:18,881 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-19 07:49:18,882 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:18,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:18,883 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:18,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:31,017 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:50:31,320 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-11-19 07:50:31,605 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-11-19 07:50:31,669 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:50:31,989 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-11-19 07:50:32,279 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 218 for LOIs [2022-11-19 07:50:33,387 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-11-19 07:50:33,417 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 218 for LOIs [2022-11-19 07:50:34,931 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 211 for LOIs [2022-11-19 07:50:34,961 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 417 for LOIs [2022-11-19 07:50:36,382 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:48,676 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:53,996 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:07,984 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 470 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:19,413 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 492 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:31,343 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 514 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:47,169 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 532 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:53,402 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 525 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:07,787 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 527 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:28,430 WARN L233 SmtUtils]: Spent 10.44s on a formula simplification. DAG size of input: 530 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:41,817 WARN L233 SmtUtils]: Spent 10.26s on a formula simplification. DAG size of input: 417 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:53:05,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [392022491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:05,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:53:05,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-11-19 07:53:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996797096] [2022-11-19 07:53:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:05,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 07:53:05,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 07:53:05,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2022-11-19 07:53:05,979 INFO L87 Difference]: Start difference. First operand 423 states and 648 transitions. Second operand has 48 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:53:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:42,826 INFO L93 Difference]: Finished difference Result 816 states and 1271 transitions. [2022-11-19 07:53:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-19 07:53:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 70 [2022-11-19 07:53:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:42,831 INFO L225 Difference]: With dead ends: 816 [2022-11-19 07:53:42,831 INFO L226 Difference]: Without dead ends: 571 [2022-11-19 07:53:42,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 167.5s TimeCoverageRelationStatistics Valid=187, Invalid=3119, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 07:53:42,834 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 299 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 4925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:42,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 3285 Invalid, 4925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 4880 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2022-11-19 07:53:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-19 07:53:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2022-11-19 07:53:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 382 states have (on average 1.5) internal successors, (573), 387 states have internal predecessors, (573), 89 states have call successors, (89), 30 states have call predecessors, (89), 28 states have return successors, (89), 82 states have call predecessors, (89), 88 states have call successors, (89) [2022-11-19 07:53:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 751 transitions. [2022-11-19 07:53:43,306 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 751 transitions. Word has length 70 [2022-11-19 07:53:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:43,307 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 751 transitions. [2022-11-19 07:53:43,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:53:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 751 transitions. [2022-11-19 07:53:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:53:43,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:43,310 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:43,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:53:43,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:43,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1694676743, now seen corresponding path program 1 times [2022-11-19 07:53:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:43,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447611448] [2022-11-19 07:53:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:53:43,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:43,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447611448] [2022-11-19 07:53:43,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447611448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:53:43,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017969483] [2022-11-19 07:53:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:43,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:43,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:53:43,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d8ef9a-ac31-4cd6-956a-3c9d0c5f0d46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:53:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:43,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:53:44,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:53:44,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:53:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:53:44,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017969483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:53:44,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [907895045] [2022-11-19 07:53:44,155 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-19 07:53:44,155 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:53:44,155 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:53:44,156 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:53:44,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:54:23,403 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:54:23,867 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 436 for LOIs [2022-11-19 07:54:24,168 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 251 for LOIs [2022-11-19 07:54:52,060 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-11-19 07:54:52,388 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 455 for LOIs [2022-11-19 07:55:00,640 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 238 for LOIs [2022-11-19 07:55:00,697 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-11-19 07:55:00,764 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 232 for LOIs [2022-11-19 07:55:00,921 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:55:30,969 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 470 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:43,713 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 492 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:56,716 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 514 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:07,330 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 586 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:29,806 WARN L233 SmtUtils]: Spent 22.02s on a formula simplification. DAG size of input: 585 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)