./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0 --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 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a --- 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-e04fb08 [2022-11-16 15:53:21,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:53:21,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:53:21,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:53:21,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:53:21,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:53:21,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:53:21,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:53:21,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:53:21,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:53:21,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:53:21,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:53:21,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:53:21,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:53:21,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:53:21,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:53:21,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:53:21,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:53:21,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:53:21,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:53:21,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:53:21,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:53:21,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:53:21,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:53:21,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:53:21,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:53:21,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:53:21,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:53:21,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:53:21,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:53:21,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:53:21,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:53:21,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:53:21,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:53:21,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:53:21,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:53:21,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:53:21,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:53:21,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:53:21,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:53:21,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:53:21,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 15:53:21,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:53:21,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:53:21,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:53:21,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:53:21,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:53:21,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:53:21,710 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:53:21,710 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:53:21,710 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:53:21,711 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:53:21,712 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:53:21,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:53:21,713 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:53:21,713 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:53:21,713 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:53:21,713 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:53:21,714 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:53:21,714 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:53:21,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:53:21,715 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:53:21,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:53:21,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:53:21,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:53:21,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:53:21,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:53:21,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:53:21,719 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:53:21,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:53:21,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:53:21,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:53:21,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:53:21,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:53:21,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:53:21,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:53:21,721 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:53:21,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:53:21,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:53:21,722 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:53:21,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:53:21,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:53:21,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:53:21,723 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_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a [2022-11-16 15:53:22,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:53:22,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:53:22,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:53:22,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:53:22,179 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:53:22,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2022-11-16 15:53:22,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/data/ab86f3cbc/a17e1b020e1e42b6a406e2588f689497/FLAG743263aae [2022-11-16 15:53:22,972 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:53:22,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2022-11-16 15:53:23,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/data/ab86f3cbc/a17e1b020e1e42b6a406e2588f689497/FLAG743263aae [2022-11-16 15:53:23,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/data/ab86f3cbc/a17e1b020e1e42b6a406e2588f689497 [2022-11-16 15:53:23,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:53:23,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:53:23,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:53:23,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:53:23,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:53:23,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:23" (1/1) ... [2022-11-16 15:53:23,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b521c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:23, skipping insertion in model container [2022-11-16 15:53:23,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:23" (1/1) ... [2022-11-16 15:53:23,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:53:23,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:53:23,870 WARN L229 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_f621125a-43a6-46ff-aa63-d6a7523dc218/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2022-11-16 15:53:24,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:53:24,101 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:53:24,168 WARN L229 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_f621125a-43a6-46ff-aa63-d6a7523dc218/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2022-11-16 15:53:24,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:53:24,325 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:53:24,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24 WrapperNode [2022-11-16 15:53:24,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:53:24,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:53:24,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:53:24,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:53:24,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,460 INFO L138 Inliner]: procedures = 130, calls = 215, calls flagged for inlining = 60, calls inlined = 53, statements flattened = 978 [2022-11-16 15:53:24,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:53:24,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:53:24,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:53:24,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:53:24,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:53:24,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:53:24,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:53:24,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:53:24,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (1/1) ... [2022-11-16 15:53:24,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:53:24,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:24,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:53:24,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:53:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-16 15:53:24,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-16 15:53:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-16 15:53:24,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-16 15:53:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 15:53:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 15:53:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-16 15:53:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-16 15:53:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 15:53:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 15:53:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-16 15:53:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-16 15:53:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 15:53:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 15:53:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-16 15:53:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-16 15:53:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 15:53:24,659 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 15:53:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 15:53:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 15:53:24,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 15:53:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 15:53:24,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 15:53:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:53:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-16 15:53:24,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-16 15:53:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-16 15:53:24,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-16 15:53:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 15:53:24,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 15:53:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 15:53:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 15:53:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 15:53:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 15:53:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 15:53:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 15:53:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 15:53:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 15:53:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 15:53:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 15:53:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:53:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 15:53:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 15:53:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-16 15:53:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-16 15:53:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:53:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:53:24,916 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:53:24,919 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:53:26,044 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:53:26,661 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:53:26,661 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 15:53:26,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:53:26 BoogieIcfgContainer [2022-11-16 15:53:26,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:53:26,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:53:26,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:53:26,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:53:26,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:53:23" (1/3) ... [2022-11-16 15:53:26,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d33f40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:26, skipping insertion in model container [2022-11-16 15:53:26,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:24" (2/3) ... [2022-11-16 15:53:26,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d33f40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:26, skipping insertion in model container [2022-11-16 15:53:26,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:53:26" (3/3) ... [2022-11-16 15:53:26,674 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product23.cil.c [2022-11-16 15:53:26,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:53:26,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:53:26,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:53:26,783 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;@33b5919f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:53:26,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:53:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-16 15:53:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 15:53:26,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:26,807 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:26,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 207041302, now seen corresponding path program 1 times [2022-11-16 15:53:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:26,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904555458] [2022-11-16 15:53:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:26,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 15:53:27,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:27,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904555458] [2022-11-16 15:53:27,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904555458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:27,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:27,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:53:27,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231276323] [2022-11-16 15:53:27,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 15:53:27,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 15:53:27,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 15:53:27,436 INFO L87 Difference]: Start difference. First operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 15:53:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:27,641 INFO L93 Difference]: Finished difference Result 252 states and 335 transitions. [2022-11-16 15:53:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 15:53:27,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-11-16 15:53:27,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:27,667 INFO L225 Difference]: With dead ends: 252 [2022-11-16 15:53:27,667 INFO L226 Difference]: Without dead ends: 169 [2022-11-16 15:53:27,676 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 [2022-11-16 15:53:27,681 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:27,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:53:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-16 15:53:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-16 15:53:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 99 states have internal predecessors, (126), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-16 15:53:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 225 transitions. [2022-11-16 15:53:27,759 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 225 transitions. Word has length 60 [2022-11-16 15:53:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:27,763 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 225 transitions. [2022-11-16 15:53:27,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 15:53:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 225 transitions. [2022-11-16 15:53:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 15:53:27,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:27,771 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:53:27,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1665728976, now seen corresponding path program 1 times [2022-11-16 15:53:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:27,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648420967] [2022-11-16 15:53:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 15:53:28,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:28,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648420967] [2022-11-16 15:53:28,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648420967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:28,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:28,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:53:28,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574185079] [2022-11-16 15:53:28,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:53:28,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:53:28,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:28,022 INFO L87 Difference]: Start difference. First operand 169 states and 225 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 15:53:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:28,201 INFO L93 Difference]: Finished difference Result 248 states and 320 transitions. [2022-11-16 15:53:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:53:28,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-16 15:53:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:28,207 INFO L225 Difference]: With dead ends: 248 [2022-11-16 15:53:28,207 INFO L226 Difference]: Without dead ends: 171 [2022-11-16 15:53:28,208 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 [2022-11-16 15:53:28,210 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:28,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:53:28,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-16 15:53:28,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-16 15:53:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-16 15:53:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 227 transitions. [2022-11-16 15:53:28,229 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 227 transitions. Word has length 61 [2022-11-16 15:53:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:28,229 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 227 transitions. [2022-11-16 15:53:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 15:53:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 227 transitions. [2022-11-16 15:53:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 15:53:28,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:28,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:28,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:53:28,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 595308532, now seen corresponding path program 1 times [2022-11-16 15:53:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:28,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155235689] [2022-11-16 15:53:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 15:53:28,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:28,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155235689] [2022-11-16 15:53:28,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155235689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:28,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:28,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:53:28,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273169874] [2022-11-16 15:53:28,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:28,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:53:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:28,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:53:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:28,380 INFO L87 Difference]: Start difference. First operand 171 states and 227 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 15:53:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:28,535 INFO L93 Difference]: Finished difference Result 377 states and 521 transitions. [2022-11-16 15:53:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:53:28,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-16 15:53:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:28,540 INFO L225 Difference]: With dead ends: 377 [2022-11-16 15:53:28,541 INFO L226 Difference]: Without dead ends: 224 [2022-11-16 15:53:28,542 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 [2022-11-16 15:53:28,544 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 59 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:28,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 394 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:53:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-16 15:53:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-11-16 15:53:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 133 states have (on average 1.3759398496240602) internal successors, (183), 135 states have internal predecessors, (183), 64 states have call successors, (64), 21 states have call predecessors, (64), 21 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-16 15:53:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 310 transitions. [2022-11-16 15:53:28,568 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 310 transitions. Word has length 66 [2022-11-16 15:53:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:28,568 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 310 transitions. [2022-11-16 15:53:28,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 15:53:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 310 transitions. [2022-11-16 15:53:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 15:53:28,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:28,572 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] [2022-11-16 15:53:28,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 15:53:28,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash -53160458, now seen corresponding path program 1 times [2022-11-16 15:53:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:28,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329361865] [2022-11-16 15:53:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:28,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 15:53:28,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:28,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329361865] [2022-11-16 15:53:28,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329361865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:53:28,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282339167] [2022-11-16 15:53:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:28,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:28,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:28,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:28,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:53:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:29,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 15:53:29,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 15:53:29,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:53:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 15:53:29,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282339167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:53:29,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245834867] [2022-11-16 15:53:29,314 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-16 15:53:29,315 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:53:29,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:53:29,325 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:53:29,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:54:10,188 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-16 15:54:10,519 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-16 15:54:10,855 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-16 15:54:12,905 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-16 15:54:12,947 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-16 15:54:16,749 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 269 for LOIs [2022-11-16 15:54:19,831 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-16 15:54:19,866 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-16 15:54:19,908 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-16 15:54:25,190 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 242 for LOIs [2022-11-16 15:54:25,234 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:38,385 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:54:43,858 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:01,619 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 482 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:25,332 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:30,685 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 563 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:36,103 WARN L233 SmtUtils]: Spent 5.07s 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) [2022-11-16 15:55:45,632 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 477 DAG size of output: 275 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:53,217 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 499 DAG size of output: 279 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:56:40,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1245834867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:56:40,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:56:40,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-16 15:56:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796935141] [2022-11-16 15:56:40,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:56:40,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-16 15:56:40,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:56:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-16 15:56:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2721, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 15:56:40,110 INFO L87 Difference]: Start difference. First operand 219 states and 310 transitions. Second operand has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 15:57:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:39,246 INFO L93 Difference]: Finished difference Result 630 states and 978 transitions. [2022-11-16 15:57:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 15:57:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2022-11-16 15:57:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:39,251 INFO L225 Difference]: With dead ends: 630 [2022-11-16 15:57:39,251 INFO L226 Difference]: Without dead ends: 429 [2022-11-16 15:57:39,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 165.0s TimeCoverageRelationStatistics Valid=225, Invalid=3935, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 15:57:39,254 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 446 mSDsluCounter, 4955 mSDsCounter, 0 mSdLazyCounter, 7147 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 7188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 7147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:39,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 5214 Invalid, 7188 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [41 Valid, 7147 Invalid, 0 Unknown, 0 Unchecked, 28.2s Time] [2022-11-16 15:57:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-16 15:57:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 324. [2022-11-16 15:57:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 219 states have (on average 1.4337899543378996) internal successors, (314), 222 states have internal predecessors, (314), 76 states have call successors, (76), 30 states have call predecessors, (76), 28 states have return successors, (76), 71 states have call predecessors, (76), 75 states have call successors, (76) [2022-11-16 15:57:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 466 transitions. [2022-11-16 15:57:39,413 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 466 transitions. Word has length 67 [2022-11-16 15:57:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:39,413 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 466 transitions. [2022-11-16 15:57:39,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 15:57:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 466 transitions. [2022-11-16 15:57:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 15:57:39,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:39,417 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:39,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 15:57:39,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:57:39,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:39,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1071621407, now seen corresponding path program 1 times [2022-11-16 15:57:39,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:39,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36342732] [2022-11-16 15:57:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:39,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 15:57:39,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:39,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36342732] [2022-11-16 15:57:39,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36342732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:39,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:39,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358639177] [2022-11-16 15:57:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:39,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:39,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:39,727 INFO L87 Difference]: Start difference. First operand 324 states and 466 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 15:57:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:40,093 INFO L93 Difference]: Finished difference Result 735 states and 1088 transitions. [2022-11-16 15:57:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:40,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-16 15:57:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:40,097 INFO L225 Difference]: With dead ends: 735 [2022-11-16 15:57:40,097 INFO L226 Difference]: Without dead ends: 449 [2022-11-16 15:57:40,098 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 [2022-11-16 15:57:40,099 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 57 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:40,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 411 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:57:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-16 15:57:40,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 442. [2022-11-16 15:57:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 306 states have (on average 1.4640522875816993) internal successors, (448), 309 states have internal predecessors, (448), 107 states have call successors, (107), 30 states have call predecessors, (107), 28 states have return successors, (107), 102 states have call predecessors, (107), 106 states have call successors, (107) [2022-11-16 15:57:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 662 transitions. [2022-11-16 15:57:40,306 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 662 transitions. Word has length 72 [2022-11-16 15:57:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:40,307 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 662 transitions. [2022-11-16 15:57:40,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 15:57:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 662 transitions. [2022-11-16 15:57:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 15:57:40,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:40,310 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:40,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 15:57:40,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:40,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:40,311 INFO L85 PathProgramCache]: Analyzing trace with hash 915717312, now seen corresponding path program 1 times [2022-11-16 15:57:40,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:40,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914324005] [2022-11-16 15:57:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 15:57:40,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914324005] [2022-11-16 15:57:40,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914324005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:57:40,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318152820] [2022-11-16 15:57:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:40,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:57:40,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:57:40,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:57:40,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 15:57:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:40,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 15:57:40,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:57:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 15:57:40,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:57:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 15:57:40,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318152820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:57:40,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1962683144] [2022-11-16 15:57:40,974 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-16 15:57:40,975 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:57:40,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:57:40,977 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:57:40,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:58:23,630 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-16 15:58:23,938 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-16 15:58:24,365 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-16 15:58:26,053 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-16 15:58:26,090 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-11-16 15:58:30,446 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2022-11-16 15:58:37,474 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 437 for LOIs [2022-11-16 15:58:37,777 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-16 15:58:37,824 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 479 for LOIs [2022-11-16 15:58:40,177 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 260 for LOIs [2022-11-16 15:58:40,236 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:58:57,995 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:16,991 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 482 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:43,357 WARN L233 SmtUtils]: Spent 10.66s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:04,034 WARN L233 SmtUtils]: Spent 20.31s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:22,562 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 479 DAG size of output: 271 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:02,548 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 500 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:09,876 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 522 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:15,612 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 437 DAG size of output: 316 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:21,489 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 443 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:31,023 WARN L233 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 548 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:36,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1962683144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:01:36,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:01:36,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-16 16:01:36,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777712039] [2022-11-16 16:01:36,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:01:36,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-16 16:01:36,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:01:36,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-16 16:01:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3136, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 16:01:36,015 INFO L87 Difference]: Start difference. First operand 442 states and 662 transitions. Second operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 16:01:54,709 WARN L233 SmtUtils]: Spent 12.66s on a formula simplification. DAG size of input: 572 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:02:25,931 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 591 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:02:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:02:56,352 INFO L93 Difference]: Finished difference Result 892 states and 1367 transitions. [2022-11-16 16:02:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-16 16:02:56,353 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 73 [2022-11-16 16:02:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:02:56,357 INFO L225 Difference]: With dead ends: 892 [2022-11-16 16:02:56,357 INFO L226 Difference]: Without dead ends: 591 [2022-11-16 16:02:56,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 225.3s TimeCoverageRelationStatistics Valid=257, Invalid=4573, Unknown=0, NotChecked=0, Total=4830 [2022-11-16 16:02:56,360 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 398 mSDsluCounter, 5205 mSDsCounter, 0 mSdLazyCounter, 7071 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 7126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 7071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:02:56,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 5459 Invalid, 7126 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 7071 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2022-11-16 16:02:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-16 16:02:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 470. [2022-11-16 16:02:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 331 states have (on average 1.4652567975830815) internal successors, (485), 335 states have internal predecessors, (485), 109 states have call successors, (109), 31 states have call predecessors, (109), 29 states have return successors, (109), 103 states have call predecessors, (109), 108 states have call successors, (109) [2022-11-16 16:02:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 703 transitions. [2022-11-16 16:02:56,630 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 703 transitions. Word has length 73 [2022-11-16 16:02:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:02:56,631 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 703 transitions. [2022-11-16 16:02:56,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 16:02:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 703 transitions. [2022-11-16 16:02:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 16:02:56,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:02:56,638 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] [2022-11-16 16:02:56,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 16:02:56,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:02:56,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:02:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:02:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1541262420, now seen corresponding path program 1 times [2022-11-16 16:02:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:02:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100041493] [2022-11-16 16:02:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:02:56,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:02:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:02:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:02:57,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:02:57,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100041493] [2022-11-16 16:02:57,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100041493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:02:57,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777501982] [2022-11-16 16:02:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:02:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:02:57,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:02:57,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:02:57,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f621125a-43a6-46ff-aa63-d6a7523dc218/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:02:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:02:57,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:02:57,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:02:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:02:57,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:02:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:02:57,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777501982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:02:57,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [554878727] [2022-11-16 16:02:57,435 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-16 16:02:57,435 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:02:57,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:02:57,436 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:02:57,436 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:05:17,677 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-16 16:05:17,981 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-11-16 16:05:18,302 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-11-16 16:05:18,650 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-16 16:05:18,721 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-16 16:05:19,019 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:05:51,194 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 482 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:06:15,722 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 547 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:06:22,538 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 549 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:06:30,552 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 569 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:06:35,944 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 565 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:06:50,897 WARN L233 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 545 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:07:07,747 WARN L233 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 526 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:07:07,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [554878727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:07:07,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:07:07,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-16 16:07:07,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651950354] [2022-11-16 16:07:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:07:07,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 16:07:07,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:07,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 16:07:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 16:07:07,754 INFO L87 Difference]: Start difference. First operand 470 states and 703 transitions. Second operand has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15)