./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 614dee6ac528b2b5bcd12e57f515dcc43213e2cedeb5bd1e2531b305b02c78fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:30:27,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:30:27,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:30:27,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:30:27,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:30:27,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:30:27,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:30:27,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:30:27,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:30:27,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:30:27,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:30:27,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:30:27,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:30:27,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:30:27,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:30:27,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:30:27,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:30:27,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:30:27,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:30:27,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:30:27,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:30:27,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:30:27,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:30:27,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:30:27,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:30:27,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:30:27,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:30:27,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:30:27,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:30:27,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:30:27,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:30:27,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:30:27,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:30:27,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:30:27,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:30:27,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:30:27,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:30:27,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:30:27,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:30:27,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:30:27,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:30:27,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:30:27,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:30:27,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:30:27,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:30:27,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:30:27,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:30:27,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:30:27,346 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:30:27,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:30:27,347 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:30:27,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:30:27,348 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:30:27,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:30:27,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:30:27,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:30:27,349 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:30:27,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:30:27,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:30:27,350 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:30:27,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:30:27,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:30:27,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:30:27,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:30:27,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:30:27,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:30:27,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:30:27,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:30:27,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:30:27,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:30:27,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:30:27,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:30:27,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:30:27,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:30:27,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:27,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:30:27,355 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:30:27,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:30:27,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:30:27,356 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:30:27,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:30:27,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:30:27,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:30:27,357 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_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 614dee6ac528b2b5bcd12e57f515dcc43213e2cedeb5bd1e2531b305b02c78fa [2022-11-03 03:30:27,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:30:27,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:30:27,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:30:27,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:30:27,734 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:30:27,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec8_product32.cil.c [2022-11-03 03:30:27,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/data/318d9b2ee/3aa033ff1cf249548baf64a4b5c3df5f/FLAG20a536f97 [2022-11-03 03:30:28,592 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:30:28,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c [2022-11-03 03:30:28,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/data/318d9b2ee/3aa033ff1cf249548baf64a4b5c3df5f/FLAG20a536f97 [2022-11-03 03:30:28,770 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/data/318d9b2ee/3aa033ff1cf249548baf64a4b5c3df5f [2022-11-03 03:30:28,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:30:28,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:30:28,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:28,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:30:28,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:30:28,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:28" (1/1) ... [2022-11-03 03:30:28,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd5cdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:28, skipping insertion in model container [2022-11-03 03:30:28,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:28" (1/1) ... [2022-11-03 03:30:28,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:30:28,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:30:29,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c[37064,37077] [2022-11-03 03:30:29,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:29,584 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:30:29,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c[37064,37077] [2022-11-03 03:30:29,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:29,798 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:30:29,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29 WrapperNode [2022-11-03 03:30:29,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:29,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:29,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:30:29,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:30:29,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,883 INFO L138 Inliner]: procedures = 135, calls = 242, calls flagged for inlining = 62, calls inlined = 54, statements flattened = 1001 [2022-11-03 03:30:29,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:29,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:30:29,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:30:29,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:30:29,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:30:29,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:30:29,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:30:29,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:30:29,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (1/1) ... [2022-11-03 03:30:29,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:29,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:30,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:30:30,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:30:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 03:30:30,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 03:30:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:30:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:30:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:30:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:30:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:30:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:30:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:30:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:30:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:30:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:30:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:30:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:30:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:30:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:30:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:30:30,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:30:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:30:30,060 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:30:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:30:30,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:30:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 03:30:30,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 03:30:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:30:30,061 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:30:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:30:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:30:30,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:30:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:30:30,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:30:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:30:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 03:30:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 03:30:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 03:30:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 03:30:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:30:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:30:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:30:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:30:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:30:30,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:30:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:30:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:30:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 03:30:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 03:30:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:30:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:30:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:30:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:30:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:30:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:30:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:30:30,071 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:30:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:30:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:30:30,072 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:30:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:30:30,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:30:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:30:30,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:30:30,393 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:30:30,396 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:30:31,646 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:30:32,468 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:30:32,468 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:30:32,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:32 BoogieIcfgContainer [2022-11-03 03:30:32,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:30:32,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:30:32,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:30:32,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:30:32,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:30:28" (1/3) ... [2022-11-03 03:30:32,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7fdd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:32, skipping insertion in model container [2022-11-03 03:30:32,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:29" (2/3) ... [2022-11-03 03:30:32,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7fdd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:32, skipping insertion in model container [2022-11-03 03:30:32,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:32" (3/3) ... [2022-11-03 03:30:32,484 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product32.cil.c [2022-11-03 03:30:32,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:30:32,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:30:32,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:30:32,601 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;@574d9a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:30:32,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:30:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 03:30:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:30:32,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:32,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:32,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1092945794, now seen corresponding path program 1 times [2022-11-03 03:30:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509600425] [2022-11-03 03:30:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:30:33,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509600425] [2022-11-03 03:30:33,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509600425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:33,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:33,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:30:33,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62031931] [2022-11-03 03:30:33,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:30:33,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:33,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:30:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:30:33,274 INFO L87 Difference]: Start difference. First operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:30:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:33,547 INFO L93 Difference]: Finished difference Result 346 states and 455 transitions. [2022-11-03 03:30:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:30:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-03 03:30:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:33,574 INFO L225 Difference]: With dead ends: 346 [2022-11-03 03:30:33,575 INFO L226 Difference]: Without dead ends: 216 [2022-11-03 03:30:33,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:30:33,591 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:33,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:33,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-03 03:30:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-03 03:30:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.278688524590164) internal successors, (156), 126 states have internal predecessors, (156), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 03:30:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2022-11-03 03:30:33,746 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 71 [2022-11-03 03:30:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:33,749 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2022-11-03 03:30:33,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:30:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2022-11-03 03:30:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 03:30:33,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:33,768 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:33,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:30:33,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:33,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:33,770 INFO L85 PathProgramCache]: Analyzing trace with hash -572694895, now seen corresponding path program 1 times [2022-11-03 03:30:33,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:33,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454176530] [2022-11-03 03:30:33,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:33,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:30:34,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:34,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454176530] [2022-11-03 03:30:34,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454176530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:34,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:34,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070001869] [2022-11-03 03:30:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:34,132 INFO L87 Difference]: Start difference. First operand 216 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:30:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:34,344 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2022-11-03 03:30:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:34,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-03 03:30:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:34,347 INFO L225 Difference]: With dead ends: 342 [2022-11-03 03:30:34,348 INFO L226 Difference]: Without dead ends: 218 [2022-11-03 03:30:34,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:34,350 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:34,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-03 03:30:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-03 03:30:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 03:30:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 287 transitions. [2022-11-03 03:30:34,373 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 287 transitions. Word has length 72 [2022-11-03 03:30:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:34,374 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 287 transitions. [2022-11-03 03:30:34,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:30:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 287 transitions. [2022-11-03 03:30:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 03:30:34,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:34,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:34,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:30:34,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash 940799684, now seen corresponding path program 1 times [2022-11-03 03:30:34,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:34,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191228877] [2022-11-03 03:30:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:34,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:30:34,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:34,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191228877] [2022-11-03 03:30:34,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191228877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:34,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:34,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:34,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577188655] [2022-11-03 03:30:34,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:34,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:34,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:34,665 INFO L87 Difference]: Start difference. First operand 218 states and 287 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:30:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:34,869 INFO L93 Difference]: Finished difference Result 471 states and 641 transitions. [2022-11-03 03:30:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-03 03:30:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:34,879 INFO L225 Difference]: With dead ends: 471 [2022-11-03 03:30:34,880 INFO L226 Difference]: Without dead ends: 271 [2022-11-03 03:30:34,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:34,890 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 59 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:34,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 505 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-03 03:30:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2022-11-03 03:30:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 162 states have internal predecessors, (213), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-03 03:30:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2022-11-03 03:30:34,947 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 77 [2022-11-03 03:30:34,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:34,948 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2022-11-03 03:30:34,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:30:34,948 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2022-11-03 03:30:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 03:30:34,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:34,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:34,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:30:34,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash -75589118, now seen corresponding path program 1 times [2022-11-03 03:30:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:34,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194900036] [2022-11-03 03:30:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:30:35,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:35,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194900036] [2022-11-03 03:30:35,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194900036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:30:35,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125128042] [2022-11-03 03:30:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:35,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:35,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:35,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:30:35,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:30:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:35,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:30:35,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:30:35,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:30:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:30:35,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125128042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:30:35,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1869831265] [2022-11-03 03:30:35,787 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 03:30:35,788 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:30:35,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:30:35,800 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:30:35,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:31:10,259 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 03:31:10,715 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 269 for LOIs [2022-11-03 03:31:13,120 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 03:31:13,169 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-03 03:31:13,540 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 271 for LOIs [2022-11-03 03:31:17,780 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 227 for LOIs [2022-11-03 03:31:17,845 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 280 for LOIs [2022-11-03 03:31:25,438 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 250 for LOIs [2022-11-03 03:31:25,518 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-03 03:31:25,581 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-03 03:31:28,062 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 255 for LOIs [2022-11-03 03:31:28,114 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:31:43,762 WARN L234 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:31:50,718 WARN L234 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:31:59,608 WARN L234 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:08,691 WARN L234 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:16,497 WARN L234 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 468 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:24,333 WARN L234 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 480 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:31,614 WARN L234 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 490 DAG size of output: 275 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:39,991 WARN L234 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 502 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:49,456 WARN L234 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 512 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:32:55,987 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 565 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:08,037 WARN L234 SmtUtils]: Spent 11.43s on a formula simplification. DAG size of input: 567 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:15,567 WARN L234 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 569 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:23,038 WARN L234 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 565 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:48,111 WARN L234 SmtUtils]: Spent 17.95s on a formula simplification. DAG size of input: 477 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:40,744 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 473 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:05,220 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 523 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:35:10,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1869831265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:10,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:10,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-03 03:35:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250137265] [2022-11-03 03:35:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:10,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-03 03:35:10,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-03 03:35:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3268, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 03:35:10,133 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 03:35:25,853 WARN L234 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 492 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:36:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:53,491 INFO L93 Difference]: Finished difference Result 716 states and 1084 transitions. [2022-11-03 03:36:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-03 03:36:53,492 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2022-11-03 03:36:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:53,497 INFO L225 Difference]: With dead ends: 716 [2022-11-03 03:36:53,498 INFO L226 Difference]: Without dead ends: 468 [2022-11-03 03:36:53,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 274.1s TimeCoverageRelationStatistics Valid=243, Invalid=4869, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 03:36:53,504 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 292 mSDsluCounter, 7892 mSDsCounter, 0 mSdLazyCounter, 9965 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 7994 SdHoareTripleChecker+Invalid, 10012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 9965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:53,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 7994 Invalid, 10012 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [47 Valid, 9965 Invalid, 0 Unknown, 0 Unchecked, 50.0s Time] [2022-11-03 03:36:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-03 03:36:53,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 363. [2022-11-03 03:36:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 238 states have (on average 1.403361344537815) internal successors, (334), 242 states have internal predecessors, (334), 89 states have call successors, (89), 38 states have call predecessors, (89), 35 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-03 03:36:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 511 transitions. [2022-11-03 03:36:53,773 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 511 transitions. Word has length 78 [2022-11-03 03:36:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:53,774 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 511 transitions. [2022-11-03 03:36:53,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 03:36:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 511 transitions. [2022-11-03 03:36:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 03:36:53,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:53,778 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:53,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:53,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-03 03:36:53,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:53,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1864649718, now seen corresponding path program 1 times [2022-11-03 03:36:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:53,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94598767] [2022-11-03 03:36:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:36:54,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:54,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94598767] [2022-11-03 03:36:54,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94598767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:54,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:54,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:54,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648251582] [2022-11-03 03:36:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:54,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:54,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:54,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:54,123 INFO L87 Difference]: Start difference. First operand 363 states and 511 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:36:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:54,574 INFO L93 Difference]: Finished difference Result 813 states and 1178 transitions. [2022-11-03 03:36:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-03 03:36:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:54,584 INFO L225 Difference]: With dead ends: 813 [2022-11-03 03:36:54,584 INFO L226 Difference]: Without dead ends: 488 [2022-11-03 03:36:54,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:54,589 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 57 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:54,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 514 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:36:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-03 03:36:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 481. [2022-11-03 03:36:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 325 states have (on average 1.44) internal successors, (468), 329 states have internal predecessors, (468), 120 states have call successors, (120), 38 states have call predecessors, (120), 35 states have return successors, (119), 115 states have call predecessors, (119), 119 states have call successors, (119) [2022-11-03 03:36:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 707 transitions. [2022-11-03 03:36:55,011 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 707 transitions. Word has length 83 [2022-11-03 03:36:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:55,012 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 707 transitions. [2022-11-03 03:36:55,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:36:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 707 transitions. [2022-11-03 03:36:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 03:36:55,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:55,027 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:55,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:36:55,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -908353717, now seen corresponding path program 1 times [2022-11-03 03:36:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:55,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875240049] [2022-11-03 03:36:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:36:55,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:55,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875240049] [2022-11-03 03:36:55,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875240049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:55,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675600239] [2022-11-03 03:36:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:55,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:55,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:55,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:55,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:36:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:55,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:36:55,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:36:55,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:36:55,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675600239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:36:55,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813954568] [2022-11-03 03:36:55,778 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-03 03:36:55,778 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:55,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:55,779 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:55,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:31,832 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 03:37:32,202 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-11-03 03:37:34,375 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-11-03 03:37:34,421 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-03 03:37:34,786 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 264 for LOIs [2022-11-03 03:37:38,432 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 222 for LOIs [2022-11-03 03:37:38,475 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 275 for LOIs [2022-11-03 03:37:46,168 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-11-03 03:37:46,268 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-03 03:37:46,328 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-03 03:37:48,539 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2022-11-03 03:37:48,596 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:37:58,524 WARN L234 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 507 DAG size of output: 500 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:06,565 WARN L234 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:15,098 WARN L234 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:23,273 WARN L234 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:31,079 WARN L234 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:38,794 WARN L234 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 468 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:46,150 WARN L234 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 480 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:38:52,999 WARN L234 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 490 DAG size of output: 275 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:01,034 WARN L234 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 502 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:09,915 WARN L234 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 512 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:38,081 WARN L234 SmtUtils]: Spent 9.31s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:30,408 WARN L234 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 472 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:49,138 WARN L234 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 481 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:58,068 WARN L234 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 523 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:02,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [813954568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:02,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:41:02,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-11-03 03:41:02,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776293739] [2022-11-03 03:41:02,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:02,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-03 03:41:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-03 03:41:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3718, Unknown=0, NotChecked=0, Total=3906 [2022-11-03 03:41:02,843 INFO L87 Difference]: Start difference. First operand 481 states and 707 transitions. Second operand has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 03:42:13,854 WARN L234 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 464 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:53,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:53,726 INFO L93 Difference]: Finished difference Result 1004 states and 1497 transitions. [2022-11-03 03:42:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-03 03:42:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 84 [2022-11-03 03:42:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:53,735 INFO L225 Difference]: With dead ends: 1004 [2022-11-03 03:42:53,735 INFO L226 Difference]: Without dead ends: 656 [2022-11-03 03:42:53,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 259.9s TimeCoverageRelationStatistics Valid=327, Invalid=5835, Unknown=0, NotChecked=0, Total=6162 [2022-11-03 03:42:53,740 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 229 mSDsluCounter, 7209 mSDsCounter, 0 mSdLazyCounter, 8864 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 7265 SdHoareTripleChecker+Invalid, 8905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 8864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:53,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 7265 Invalid, 8905 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [41 Valid, 8864 Invalid, 0 Unknown, 0 Unchecked, 44.0s Time] [2022-11-03 03:42:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-03 03:42:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 494. [2022-11-03 03:42:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 335 states have (on average 1.4417910447761193) internal successors, (483), 340 states have internal predecessors, (483), 122 states have call successors, (122), 39 states have call predecessors, (122), 36 states have return successors, (121), 116 states have call predecessors, (121), 121 states have call successors, (121) [2022-11-03 03:42:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 726 transitions. [2022-11-03 03:42:54,062 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 726 transitions. Word has length 84 [2022-11-03 03:42:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:54,063 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 726 transitions. [2022-11-03 03:42:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 03:42:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 726 transitions. [2022-11-03 03:42:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:42:54,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:54,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:54,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:54,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:42:54,294 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash 507086192, now seen corresponding path program 1 times [2022-11-03 03:42:54,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:54,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963246967] [2022-11-03 03:42:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:54,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:42:54,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:54,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963246967] [2022-11-03 03:42:54,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963246967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:42:54,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801384234] [2022-11-03 03:42:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:54,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:42:54,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:54,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:42:54,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e8a950-86d7-4c7c-b8a9-8a348caf1e26/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:42:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:54,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:42:55,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:42:55,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:42:55,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801384234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:55,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1121598077] [2022-11-03 03:42:55,118 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-03 03:42:55,118 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:42:55,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:42:55,119 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:42:55,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs