./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product20.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_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/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_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/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_286a74af-400d-4137-bfc7-4a47e696904d/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 d4216ddf014ff953368f9c10444517e5ad475a960f2c91abb81cda95e6b2b3bf --- 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 03:38:48,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:38:48,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:38:48,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:38:48,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:38:48,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:38:48,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:38:48,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:38:48,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:38:48,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:38:48,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:38:48,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:38:48,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:38:48,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:38:48,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:38:48,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:38:48,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:38:48,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:38:48,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:38:48,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:38:48,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:38:48,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:38:48,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:38:48,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:38:48,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:38:48,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:38:48,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:38:48,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:38:48,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:38:48,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:38:48,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:38:48,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:38:48,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:38:48,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:38:48,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:38:48,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:38:48,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:38:48,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:38:48,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:38:48,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:38:48,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:38:48,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:38:48,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:38:48,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:38:48,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:38:48,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:38:48,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:38:48,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:38:48,442 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:38:48,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:38:48,442 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:38:48,442 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:38:48,443 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:38:48,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:38:48,444 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:38:48,444 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:38:48,444 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:38:48,444 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:38:48,445 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:38:48,445 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:38:48,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:38:48,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:38:48,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:38:48,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:38:48,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:38:48,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:38:48,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:38:48,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:38:48,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:38:48,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:38:48,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:38:48,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:38:48,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:38:48,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:38:48,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:38:48,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:38:48,450 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:38:48,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:38:48,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:38:48,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:38:48,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:38:48,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:38:48,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:38:48,452 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_286a74af-400d-4137-bfc7-4a47e696904d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4216ddf014ff953368f9c10444517e5ad475a960f2c91abb81cda95e6b2b3bf [2022-11-03 03:38:48,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:38:48,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:38:48,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:38:48,752 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:38:48,755 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:38:48,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec6_product20.cil.c [2022-11-03 03:38:48,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/data/2df3d9f0b/c0abad1985124c92bfb6165b29132cd9/FLAG37d064cf3 [2022-11-03 03:38:49,418 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:38:49,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/sv-benchmarks/c/product-lines/email_spec6_product20.cil.c [2022-11-03 03:38:49,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/data/2df3d9f0b/c0abad1985124c92bfb6165b29132cd9/FLAG37d064cf3 [2022-11-03 03:38:49,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/data/2df3d9f0b/c0abad1985124c92bfb6165b29132cd9 [2022-11-03 03:38:49,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:38:49,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:38:49,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:38:49,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:38:49,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:38:49,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:38:49" (1/1) ... [2022-11-03 03:38:49,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7116db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:49, skipping insertion in model container [2022-11-03 03:38:49,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:38:49" (1/1) ... [2022-11-03 03:38:49,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:38:49,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:38:50,388 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_286a74af-400d-4137-bfc7-4a47e696904d/sv-benchmarks/c/product-lines/email_spec6_product20.cil.c[56376,56389] [2022-11-03 03:38:50,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:38:50,441 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:38:50,574 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_286a74af-400d-4137-bfc7-4a47e696904d/sv-benchmarks/c/product-lines/email_spec6_product20.cil.c[56376,56389] [2022-11-03 03:38:50,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:38:50,631 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:38:50,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50 WrapperNode [2022-11-03 03:38:50,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:38:50,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:38:50,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:38:50,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:38:50,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,724 INFO L138 Inliner]: procedures = 129, calls = 222, calls flagged for inlining = 54, calls inlined = 47, statements flattened = 942 [2022-11-03 03:38:50,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:38:50,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:38:50,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:38:50,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:38:50,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:38:50,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:38:50,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:38:50,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:38:50,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (1/1) ... [2022-11-03 03:38:50,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:38:50,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:50,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:38:50,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:38:50,889 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 03:38:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 03:38:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:38:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:38:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:38:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:38:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:38:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:38:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:38:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:38:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:38:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:38:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:38:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:38:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:38:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:38:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:38:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:38:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:38:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:38:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:38:50,893 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:38:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:38:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:38:50,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:38:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:38:50,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:38:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:38:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 03:38:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 03:38:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:38:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:38:50,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:38:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:38:50,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:38:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:38:50,896 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:38:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:38:50,897 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:38:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:38:50,897 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:38:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:38:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:38:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:38:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:38:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:38:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:38:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:38:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:38:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:38:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:38:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:38:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:38:51,130 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:38:51,132 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:38:52,154 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:38:52,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:38:52,744 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:38:52,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:38:52 BoogieIcfgContainer [2022-11-03 03:38:52,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:38:52,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:38:52,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:38:52,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:38:52,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:38:49" (1/3) ... [2022-11-03 03:38:52,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b94c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:38:52, skipping insertion in model container [2022-11-03 03:38:52,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:38:50" (2/3) ... [2022-11-03 03:38:52,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b94c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:38:52, skipping insertion in model container [2022-11-03 03:38:52,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:38:52" (3/3) ... [2022-11-03 03:38:52,758 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product20.cil.c [2022-11-03 03:38:52,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:38:52,779 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:38:52,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:38:52,867 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;@7aa8f552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:38:52,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:38:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 109 states have (on average 1.3211009174311927) internal successors, (144), 114 states have internal predecessors, (144), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-03 03:38:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 03:38:52,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:52,895 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] [2022-11-03 03:38:52,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash -984611720, now seen corresponding path program 1 times [2022-11-03 03:38:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:52,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039964968] [2022-11-03 03:38:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:52,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:38:53,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:53,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039964968] [2022-11-03 03:38:53,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039964968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:53,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:53,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:38:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436689102] [2022-11-03 03:38:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:53,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:38:53,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:38:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:38:53,333 INFO L87 Difference]: Start difference. First operand has 193 states, 109 states have (on average 1.3211009174311927) internal successors, (144), 114 states have internal predecessors, (144), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:38:53,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:53,531 INFO L93 Difference]: Finished difference Result 294 states and 391 transitions. [2022-11-03 03:38:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:38:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 79 [2022-11-03 03:38:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:53,554 INFO L225 Difference]: With dead ends: 294 [2022-11-03 03:38:53,555 INFO L226 Difference]: Without dead ends: 190 [2022-11-03 03:38:53,564 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 03:38:53,574 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:53,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:38:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-03 03:38:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-03 03:38:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 111 states have internal predecessors, (138), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-03 03:38:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2022-11-03 03:38:53,685 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 79 [2022-11-03 03:38:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:53,687 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2022-11-03 03:38:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:38:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2022-11-03 03:38:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 03:38:53,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:53,702 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] [2022-11-03 03:38:53,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:38:53,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1316142753, now seen corresponding path program 1 times [2022-11-03 03:38:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:53,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27172379] [2022-11-03 03:38:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:38:53,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:53,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27172379] [2022-11-03 03:38:53,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27172379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:53,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:53,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:38:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379706788] [2022-11-03 03:38:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:38:53,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:38:53,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:53,999 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:38:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:54,178 INFO L93 Difference]: Finished difference Result 290 states and 376 transitions. [2022-11-03 03:38:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:38:54,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2022-11-03 03:38:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:54,186 INFO L225 Difference]: With dead ends: 290 [2022-11-03 03:38:54,187 INFO L226 Difference]: Without dead ends: 192 [2022-11-03 03:38:54,193 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 03:38:54,195 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:54,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 435 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:38:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-03 03:38:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-03 03:38:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 109 states have (on average 1.2844036697247707) internal successors, (140), 113 states have internal predecessors, (140), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-03 03:38:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 255 transitions. [2022-11-03 03:38:54,224 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 255 transitions. Word has length 80 [2022-11-03 03:38:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:54,225 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 255 transitions. [2022-11-03 03:38:54,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:38:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 255 transitions. [2022-11-03 03:38:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 03:38:54,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:54,233 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:54,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:38:54,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:54,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1590219848, now seen corresponding path program 1 times [2022-11-03 03:38:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:54,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119779850] [2022-11-03 03:38:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:54,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:38:54,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:54,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119779850] [2022-11-03 03:38:54,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119779850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:54,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:54,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:38:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61995468] [2022-11-03 03:38:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:54,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:38:54,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:38:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:54,446 INFO L87 Difference]: Start difference. First operand 192 states and 255 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:38:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:54,609 INFO L93 Difference]: Finished difference Result 419 states and 577 transitions. [2022-11-03 03:38:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:38:54,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 96 [2022-11-03 03:38:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:54,612 INFO L225 Difference]: With dead ends: 419 [2022-11-03 03:38:54,613 INFO L226 Difference]: Without dead ends: 245 [2022-11-03 03:38:54,614 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 03:38:54,615 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 59 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:54,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 450 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:38:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-03 03:38:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2022-11-03 03:38:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 143 states have (on average 1.3636363636363635) internal successors, (195), 147 states have internal predecessors, (195), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-03 03:38:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 338 transitions. [2022-11-03 03:38:54,638 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 338 transitions. Word has length 96 [2022-11-03 03:38:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:54,639 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 338 transitions. [2022-11-03 03:38:54,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:38:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 338 transitions. [2022-11-03 03:38:54,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 03:38:54,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:54,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:54,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:38:54,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash 34743351, now seen corresponding path program 1 times [2022-11-03 03:38:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:54,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980033322] [2022-11-03 03:38:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:38:54,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:54,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980033322] [2022-11-03 03:38:54,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980033322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449237128] [2022-11-03 03:38:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:54,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:54,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:54,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:38:54,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:38:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:38:55,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:38:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:38:55,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:38:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:38:55,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449237128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:38:55,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1987006868] [2022-11-03 03:38:55,612 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-11-03 03:38:55,613 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:38:55,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:38:55,624 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:38:55,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:39:30,023 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 448 for LOIs [2022-11-03 03:39:30,384 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-03 03:39:32,216 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 03:39:32,549 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-03 03:39:33,252 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-11-03 03:39:33,311 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 239 for LOIs [2022-11-03 03:39:33,348 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 229 for LOIs [2022-11-03 03:39:33,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:39:46,958 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 448 DAG size of output: 248 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:39:53,052 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 471 DAG size of output: 268 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:50,872 WARN L234 SmtUtils]: Spent 23.15s on a formula simplification. DAG size of input: 596 DAG size of output: 468 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:40:56,701 WARN L234 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 565 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:02,489 WARN L234 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:10,751 WARN L234 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 569 DAG size of output: 393 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:18,962 WARN L234 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 565 DAG size of output: 389 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:41:43,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1987006868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:43,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:41:43,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [4, 4, 4] total 43 [2022-11-03 03:41:43,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209412021] [2022-11-03 03:41:43,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:43,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-03 03:41:43,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:43,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-03 03:41:43,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1693, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 03:41:43,973 INFO L87 Difference]: Start difference. First operand 240 states and 338 transitions. Second operand has 38 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-03 03:41:55,619 WARN L234 SmtUtils]: Spent 9.32s on a formula simplification. DAG size of input: 576 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:22,605 WARN L234 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 522 DAG size of output: 450 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:35,444 WARN L234 SmtUtils]: Spent 11.78s on a formula simplification. DAG size of input: 594 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:42:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:56,754 INFO L93 Difference]: Finished difference Result 641 states and 991 transitions. [2022-11-03 03:42:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-03 03:42:56,755 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 97 [2022-11-03 03:42:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:56,758 INFO L225 Difference]: With dead ends: 641 [2022-11-03 03:42:56,758 INFO L226 Difference]: Without dead ends: 419 [2022-11-03 03:42:56,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 181.9s TimeCoverageRelationStatistics Valid=181, Invalid=2471, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 03:42:56,761 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 284 mSDsluCounter, 5478 mSDsCounter, 0 mSdLazyCounter, 5611 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 5645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:56,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 5658 Invalid, 5645 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [34 Valid, 5611 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2022-11-03 03:42:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-03 03:42:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 318. [2022-11-03 03:42:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 212 states have (on average 1.4386792452830188) internal successors, (305), 216 states have internal predecessors, (305), 77 states have call successors, (77), 30 states have call predecessors, (77), 28 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-03 03:42:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 458 transitions. [2022-11-03 03:42:56,958 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 458 transitions. Word has length 97 [2022-11-03 03:42:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:56,959 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 458 transitions. [2022-11-03 03:42:56,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-03 03:42:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 458 transitions. [2022-11-03 03:42:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 03:42:56,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:56,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:57,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:57,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:42:57,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:57,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1798844295, now seen corresponding path program 1 times [2022-11-03 03:42:57,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:57,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529013628] [2022-11-03 03:42:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:42:57,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529013628] [2022-11-03 03:42:57,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529013628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:42:57,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162813529] [2022-11-03 03:42:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:57,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:42:57,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:57,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:42:57,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:42:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:42:57,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:42:57,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:42:57,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162813529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:57,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1155387755] [2022-11-03 03:42:57,762 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-03 03:42:57,762 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:42:57,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:42:57,763 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:42:57,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:43:34,439 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 03:43:34,750 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 471 for LOIs [2022-11-03 03:44:05,251 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-11-03 03:44:05,551 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 03:44:05,849 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-03 03:44:12,511 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 458 for LOIs [2022-11-03 03:44:23,670 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-11-03 03:44:23,908 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-11-03 03:44:24,620 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-11-03 03:44:24,664 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 439 for LOIs [2022-11-03 03:44:24,950 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:45:20,104 WARN L234 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 560 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:27,166 WARN L234 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 562 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:34,835 WARN L234 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 566 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:42,475 WARN L234 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 562 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:50,250 WARN L234 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 568 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:57,299 WARN L234 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 561 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:02,857 WARN L234 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 471 DAG size of output: 314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:08,739 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 485 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:23,885 WARN L234 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 524 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:37,300 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 520 DAG size of output: 282 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:44,390 WARN L234 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 533 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:51,289 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 469 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:58,278 WARN L234 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 473 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:47:14,667 WARN L234 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 481 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:47:21,638 WARN L234 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 483 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:48:13,826 WARN L234 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 568 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:48:20,189 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 593 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:48:20,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1155387755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:20,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:48:20,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-03 03:48:20,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516122468] [2022-11-03 03:48:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 03:48:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 03:48:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3154, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 03:48:20,196 INFO L87 Difference]: Start difference. First operand 318 states and 458 transitions. Second operand has 53 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 32 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-03 03:49:53,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:53,010 INFO L93 Difference]: Finished difference Result 548 states and 801 transitions. [2022-11-03 03:49:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-03 03:49:53,012 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 32 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 86 [2022-11-03 03:49:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:53,016 INFO L225 Difference]: With dead ends: 548 [2022-11-03 03:49:53,016 INFO L226 Difference]: Without dead ends: 457 [2022-11-03 03:49:53,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 293.3s TimeCoverageRelationStatistics Valid=265, Invalid=4847, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 03:49:53,019 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 385 mSDsluCounter, 6574 mSDsCounter, 0 mSdLazyCounter, 8199 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 6727 SdHoareTripleChecker+Invalid, 8226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 8199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:53,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 6727 Invalid, 8226 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [27 Valid, 8199 Invalid, 0 Unknown, 0 Unchecked, 33.7s Time] [2022-11-03 03:49:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-03 03:49:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 353. [2022-11-03 03:49:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 234 states have (on average 1.4145299145299146) internal successors, (331), 239 states have internal predecessors, (331), 86 states have call successors, (86), 34 states have call predecessors, (86), 32 states have return successors, (86), 81 states have call predecessors, (86), 85 states have call successors, (86) [2022-11-03 03:49:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 503 transitions. [2022-11-03 03:49:53,319 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 503 transitions. Word has length 86 [2022-11-03 03:49:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:53,320 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 503 transitions. [2022-11-03 03:49:53,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 32 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-03 03:49:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 503 transitions. [2022-11-03 03:49:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:49:53,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:53,323 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:53,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:53,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:53,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:53,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1231439396, now seen corresponding path program 1 times [2022-11-03 03:49:53,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:53,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476203232] [2022-11-03 03:49:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 03:49:53,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:53,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476203232] [2022-11-03 03:49:53,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476203232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:53,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:53,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:53,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690511580] [2022-11-03 03:49:53,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:53,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:53,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:53,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:53,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:53,640 INFO L87 Difference]: Start difference. First operand 353 states and 503 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:49:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:54,268 INFO L93 Difference]: Finished difference Result 793 states and 1162 transitions. [2022-11-03 03:49:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:54,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 102 [2022-11-03 03:49:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:54,282 INFO L225 Difference]: With dead ends: 793 [2022-11-03 03:49:54,282 INFO L226 Difference]: Without dead ends: 478 [2022-11-03 03:49:54,283 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 03:49:54,284 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 57 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:54,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 466 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:49:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-03 03:49:54,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 471. [2022-11-03 03:49:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 321 states have (on average 1.4485981308411215) internal successors, (465), 326 states have internal predecessors, (465), 117 states have call successors, (117), 34 states have call predecessors, (117), 32 states have return successors, (117), 112 states have call predecessors, (117), 116 states have call successors, (117) [2022-11-03 03:49:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 699 transitions. [2022-11-03 03:49:54,681 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 699 transitions. Word has length 102 [2022-11-03 03:49:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:54,682 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 699 transitions. [2022-11-03 03:49:54,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:49:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 699 transitions. [2022-11-03 03:49:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 03:49:54,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:54,685 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:54,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:49:54,686 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 204952288, now seen corresponding path program 1 times [2022-11-03 03:49:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:54,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664940283] [2022-11-03 03:49:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:49:54,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:54,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664940283] [2022-11-03 03:49:54,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664940283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:49:54,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922559238] [2022-11-03 03:49:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:54,853 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:49:54,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286a74af-400d-4137-bfc7-4a47e696904d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:49:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:55,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:49:55,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:49:55,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:49:55,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922559238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:55,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640177972] [2022-11-03 03:49:55,298 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-03 03:49:55,298 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:49:55,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:49:55,299 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:49:55,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:50:39,853 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 448 for LOIs [2022-11-03 03:50:40,207 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 03:50:40,559 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:50:56,567 WARN L234 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 448 DAG size of output: 248 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:51:03,817 WARN L234 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 471 DAG size of output: 268 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:51:10,128 WARN L234 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 445 DAG size of output: 286 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:51:15,841 WARN L234 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 468 DAG size of output: 306 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)