./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh --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 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 --- 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-2329fc7 [2022-12-14 15:51:29,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:51:29,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:51:30,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:51:30,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:51:30,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:51:30,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:51:30,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:51:30,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:51:30,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:51:30,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:51:30,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:51:30,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:51:30,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:51:30,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:51:30,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:51:30,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:51:30,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:51:30,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:51:30,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:51:30,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:51:30,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:51:30,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:51:30,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:51:30,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:51:30,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:51:30,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:51:30,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:51:30,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:51:30,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:51:30,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:51:30,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:51:30,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:51:30,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:51:30,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:51:30,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:51:30,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:51:30,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:51:30,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:51:30,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:51:30,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:51:30,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:51:30,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:51:30,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:51:30,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:51:30,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:51:30,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:51:30,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:51:30,069 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:51:30,069 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:51:30,069 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:51:30,069 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:51:30,069 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:51:30,070 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:51:30,070 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:51:30,070 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:51:30,070 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:51:30,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:51:30,071 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:51:30,071 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:51:30,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:51:30,072 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:51:30,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:51:30,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:51:30,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:51:30,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:51:30,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:51:30,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:51:30,073 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:51:30,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:51:30,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:51:30,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:51:30,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:51:30,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:51:30,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:51:30,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:51:30,075 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:51:30,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:51:30,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:51:30,075 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:51:30,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:51:30,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:51:30,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:51:30,076 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_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 [2022-12-14 15:51:30,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:51:30,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:51:30,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:51:30,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:51:30,304 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:51:30,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2022-12-14 15:51:32,867 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:51:33,071 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:51:33,071 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2022-12-14 15:51:33,084 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/data/431f5ba62/3d20ac5001944ea9beaaa38a4f3e4200/FLAG7ef932945 [2022-12-14 15:51:33,094 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/data/431f5ba62/3d20ac5001944ea9beaaa38a4f3e4200 [2022-12-14 15:51:33,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:51:33,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:51:33,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:51:33,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:51:33,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:51:33,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3223c838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33, skipping insertion in model container [2022-12-14 15:51:33,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:51:33,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:51:33,397 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/sv-benchmarks/c/product-lines/email_spec1_product16.cil.c[36116,36129] [2022-12-14 15:51:33,453 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,476 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,477 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,479 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,503 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,506 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,514 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:51:33,526 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:51:33,568 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/sv-benchmarks/c/product-lines/email_spec1_product16.cil.c[36116,36129] [2022-12-14 15:51:33,583 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,585 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,585 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,587 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,593 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,594 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,597 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:51:33,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:51:33,616 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:51:33,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33 WrapperNode [2022-12-14 15:51:33,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:51:33,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:51:33,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:51:33,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:51:33,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,670 INFO L138 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 56, calls inlined = 51, statements flattened = 980 [2022-12-14 15:51:33,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:51:33,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:51:33,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:51:33,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:51:33,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:51:33,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:51:33,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:51:33,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:51:33,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (1/1) ... [2022-12-14 15:51:33,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:51:33,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:51:33,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:51:33,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:51:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 15:51:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 15:51:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 15:51:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 15:51:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 15:51:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 15:51:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 15:51:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 15:51:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 15:51:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 15:51:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 15:51:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 15:51:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 15:51:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 15:51:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 15:51:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 15:51:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 15:51:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:51:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 15:51:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 15:51:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 15:51:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 15:51:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 15:51:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 15:51:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 15:51:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 15:51:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 15:51:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 15:51:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 15:51:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 15:51:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 15:51:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 15:51:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:51:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 15:51:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 15:51:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:51:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:51:33,924 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:51:33,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:51:34,429 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:51:34,651 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:51:34,651 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:51:34,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:34 BoogieIcfgContainer [2022-12-14 15:51:34,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:51:34,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:51:34,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:51:34,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:51:34,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:51:33" (1/3) ... [2022-12-14 15:51:34,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269921f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:34, skipping insertion in model container [2022-12-14 15:51:34,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:33" (2/3) ... [2022-12-14 15:51:34,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269921f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:34, skipping insertion in model container [2022-12-14 15:51:34,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:34" (3/3) ... [2022-12-14 15:51:34,659 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product16.cil.c [2022-12-14 15:51:34,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:51:34,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:51:34,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:51:34,716 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;@19326eff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:51:34,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:51:34,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-14 15:51:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 15:51:34,728 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:51:34,728 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] [2022-12-14 15:51:34,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:51:34,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:51:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash 593239065, now seen corresponding path program 1 times [2022-12-14 15:51:34,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:51:34,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892162221] [2022-12-14 15:51:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:51:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:51:34,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:51:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892162221] [2022-12-14 15:51:34,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892162221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:51:34,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:51:34,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:51:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537263979] [2022-12-14 15:51:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:51:34,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:51:34,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:51:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:51:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:51:34,968 INFO L87 Difference]: Start difference. First operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 15:51:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:51:35,060 INFO L93 Difference]: Finished difference Result 227 states and 310 transitions. [2022-12-14 15:51:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:51:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2022-12-14 15:51:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:51:35,069 INFO L225 Difference]: With dead ends: 227 [2022-12-14 15:51:35,069 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 15:51:35,072 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 [2022-12-14 15:51:35,074 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:51:35,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:51:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 15:51:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-12-14 15:51:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 15:51:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 209 transitions. [2022-12-14 15:51:35,110 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 209 transitions. Word has length 56 [2022-12-14 15:51:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:51:35,111 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 209 transitions. [2022-12-14 15:51:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 15:51:35,112 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 209 transitions. [2022-12-14 15:51:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 15:51:35,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:51:35,114 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] [2022-12-14 15:51:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:51:35,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:51:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:51:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2092303187, now seen corresponding path program 1 times [2022-12-14 15:51:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:51:35,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68878404] [2022-12-14 15:51:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:51:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:51:35,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:51:35,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68878404] [2022-12-14 15:51:35,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68878404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:51:35,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:51:35,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:51:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900681588] [2022-12-14 15:51:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:51:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:51:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:51:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:51:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:51:35,226 INFO L87 Difference]: Start difference. First operand 152 states and 209 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 15:51:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:51:35,306 INFO L93 Difference]: Finished difference Result 223 states and 298 transitions. [2022-12-14 15:51:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:51:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 57 [2022-12-14 15:51:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:51:35,308 INFO L225 Difference]: With dead ends: 223 [2022-12-14 15:51:35,308 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 15:51:35,309 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 [2022-12-14 15:51:35,309 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:51:35,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:51:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 15:51:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-12-14 15:51:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.326086956521739) internal successors, (122), 95 states have internal predecessors, (122), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 15:51:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2022-12-14 15:51:35,321 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 57 [2022-12-14 15:51:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:51:35,321 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-12-14 15:51:35,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 15:51:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2022-12-14 15:51:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 15:51:35,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:51:35,323 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] [2022-12-14 15:51:35,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:51:35,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:51:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:51:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2059912372, now seen corresponding path program 1 times [2022-12-14 15:51:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:51:35,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716829993] [2022-12-14 15:51:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:35,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:51:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:51:35,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:51:35,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716829993] [2022-12-14 15:51:35,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716829993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:51:35,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:51:35,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:51:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474281784] [2022-12-14 15:51:35,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:51:35,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:51:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:51:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:51:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:51:35,409 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 15:51:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:51:35,499 INFO L93 Difference]: Finished difference Result 338 states and 481 transitions. [2022-12-14 15:51:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:51:35,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-12-14 15:51:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:51:35,501 INFO L225 Difference]: With dead ends: 338 [2022-12-14 15:51:35,501 INFO L226 Difference]: Without dead ends: 202 [2022-12-14 15:51:35,502 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 [2022-12-14 15:51:35,503 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 57 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:51:35,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 373 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:51:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-12-14 15:51:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2022-12-14 15:51:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 127 states have internal predecessors, (175), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 15:51:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2022-12-14 15:51:35,517 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 62 [2022-12-14 15:51:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:51:35,517 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2022-12-14 15:51:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 15:51:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2022-12-14 15:51:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 15:51:35,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:51:35,519 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] [2022-12-14 15:51:35,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:51:35,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:51:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:51:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash -307583130, now seen corresponding path program 1 times [2022-12-14 15:51:35,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:51:35,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400608747] [2022-12-14 15:51:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:35,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:51:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:51:35,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:51:35,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400608747] [2022-12-14 15:51:35,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400608747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:51:35,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741119812] [2022-12-14 15:51:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:35,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:51:35,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:51:35,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:51:35,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:51:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:35,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:51:35,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:51:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:51:35,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:51:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:51:35,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741119812] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:51:35,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [855914030] [2022-12-14 15:51:35,948 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 15:51:35,948 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:51:35,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:51:35,955 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:51:35,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:52:00,557 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 15:52:00,843 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 15:52:01,131 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:52:42,824 WARN L233 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 585 DAG size of output: 453 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:52:50,910 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:53:01,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [855914030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:53:01,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:53:01,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 15:53:01,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314277133] [2022-12-14 15:53:01,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:53:01,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 15:53:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:53:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 15:53:01,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 15:53:01,421 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 15:53:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:53:07,905 INFO L93 Difference]: Finished difference Result 473 states and 733 transitions. [2022-12-14 15:53:07,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 15:53:07,905 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 63 [2022-12-14 15:53:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:53:07,907 INFO L225 Difference]: With dead ends: 473 [2022-12-14 15:53:07,907 INFO L226 Difference]: Without dead ends: 294 [2022-12-14 15:53:07,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 15:53:07,908 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 103 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:53:07,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 2802 Invalid, 2079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 15:53:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-14 15:53:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 220. [2022-12-14 15:53:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 149 states have internal predecessors, (208), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 15:53:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 319 transitions. [2022-12-14 15:53:07,990 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 319 transitions. Word has length 63 [2022-12-14 15:53:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:53:07,990 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 319 transitions. [2022-12-14 15:53:07,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 15:53:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 319 transitions. [2022-12-14 15:53:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 15:53:07,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:53:07,992 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] [2022-12-14 15:53:08,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:53:08,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:53:08,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:53:08,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:53:08,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1650265177, now seen corresponding path program 1 times [2022-12-14 15:53:08,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:53:08,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517231069] [2022-12-14 15:53:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:53:08,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:53:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:53:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:53:08,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:53:08,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517231069] [2022-12-14 15:53:08,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517231069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:53:08,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:53:08,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:53:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255126174] [2022-12-14 15:53:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:53:08,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:53:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:53:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:53:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:53:08,259 INFO L87 Difference]: Start difference. First operand 220 states and 319 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 15:53:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:53:08,510 INFO L93 Difference]: Finished difference Result 533 states and 802 transitions. [2022-12-14 15:53:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:53:08,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2022-12-14 15:53:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:53:08,513 INFO L225 Difference]: With dead ends: 533 [2022-12-14 15:53:08,513 INFO L226 Difference]: Without dead ends: 337 [2022-12-14 15:53:08,514 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 [2022-12-14 15:53:08,516 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 55 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:53:08,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 377 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:53:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-12-14 15:53:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 332. [2022-12-14 15:53:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 233 states have (on average 1.4763948497854078) internal successors, (344), 236 states have internal predecessors, (344), 81 states have call successors, (81), 17 states have call predecessors, (81), 17 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-12-14 15:53:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 505 transitions. [2022-12-14 15:53:08,650 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 505 transitions. Word has length 68 [2022-12-14 15:53:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:53:08,650 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 505 transitions. [2022-12-14 15:53:08,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 15:53:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 505 transitions. [2022-12-14 15:53:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 15:53:08,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:53:08,652 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] [2022-12-14 15:53:08,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:53:08,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:53:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:53:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 519183720, now seen corresponding path program 1 times [2022-12-14 15:53:08,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:53:08,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310147720] [2022-12-14 15:53:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:53:08,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:53:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:53:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:53:08,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:53:08,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310147720] [2022-12-14 15:53:08,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310147720] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:53:08,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36948760] [2022-12-14 15:53:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:53:08,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:53:08,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:53:08,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:53:08,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:53:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:53:08,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:53:08,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:53:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:53:08,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:53:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 15:53:09,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36948760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:53:09,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1919314231] [2022-12-14 15:53:09,004 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-12-14 15:53:09,004 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:53:09,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:53:09,004 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:53:09,004 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:53:43,213 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-12-14 15:53:43,500 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-12-14 15:53:43,781 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-12-14 15:53:45,249 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 15:53:45,287 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2022-12-14 15:53:48,988 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 226 for LOIs [2022-12-14 15:53:49,018 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-12-14 15:53:53,484 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:54:30,514 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:54:36,494 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:54:42,492 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 588 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:54:49,006 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 586 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:55:20,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1919314231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:55:20,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:55:20,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-12-14 15:55:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637890754] [2022-12-14 15:55:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:55:20,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 15:55:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:55:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 15:55:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2225, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 15:55:20,312 INFO L87 Difference]: Start difference. First operand 332 states and 505 transitions. Second operand has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 15:56:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:56:04,427 INFO L93 Difference]: Finished difference Result 783 states and 1247 transitions. [2022-12-14 15:56:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-14 15:56:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2022-12-14 15:56:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:56:04,430 INFO L225 Difference]: With dead ends: 783 [2022-12-14 15:56:04,430 INFO L226 Difference]: Without dead ends: 514 [2022-12-14 15:56:04,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 116.6s TimeCoverageRelationStatistics Valid=214, Invalid=3692, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 15:56:04,432 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 168 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 5155 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 4245 SdHoareTripleChecker+Invalid, 5179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-12-14 15:56:04,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 4245 Invalid, 5179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 5155 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-12-14 15:56:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-14 15:56:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 427. [2022-12-14 15:56:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 315 states have (on average 1.5238095238095237) internal successors, (480), 320 states have internal predecessors, (480), 90 states have call successors, (90), 23 states have call predecessors, (90), 21 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-12-14 15:56:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 659 transitions. [2022-12-14 15:56:04,690 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 659 transitions. Word has length 69 [2022-12-14 15:56:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:56:04,691 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 659 transitions. [2022-12-14 15:56:04,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 15:56:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 659 transitions. [2022-12-14 15:56:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 15:56:04,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:56:04,692 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] [2022-12-14 15:56:04,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:56:04,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 15:56:04,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:56:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:56:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash -255671440, now seen corresponding path program 1 times [2022-12-14 15:56:04,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:56:04,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890411648] [2022-12-14 15:56:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:56:04,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:56:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:56:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:56:05,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:56:05,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890411648] [2022-12-14 15:56:05,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890411648] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:56:05,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446613393] [2022-12-14 15:56:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:56:05,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:56:05,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:56:05,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:56:05,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:56:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:56:05,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:56:05,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:56:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:56:05,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:56:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:56:05,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446613393] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:56:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [158030793] [2022-12-14 15:56:05,310 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 15:56:05,310 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:56:05,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:56:05,311 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:56:05,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:57:51,291 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-12-14 15:57:51,569 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2022-12-14 15:57:51,868 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-12-14 15:57:51,926 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 15:57:52,213 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 457 for LOIs [2022-12-14 15:57:52,537 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:58:52,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [158030793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:58:52,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:58:52,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 15:58:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657154873] [2022-12-14 15:58:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:58:52,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 15:58:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:58:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 15:58:52,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 15:58:52,310 INFO L87 Difference]: Start difference. First operand 427 states and 659 transitions. Second operand has 30 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-12-14 15:59:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:59:22,272 INFO L93 Difference]: Finished difference Result 817 states and 1290 transitions. [2022-12-14 15:59:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 15:59:22,272 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 72 [2022-12-14 15:59:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:59:22,274 INFO L225 Difference]: With dead ends: 817 [2022-12-14 15:59:22,274 INFO L226 Difference]: Without dead ends: 548 [2022-12-14 15:59:22,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 79.2s TimeCoverageRelationStatistics Valid=195, Invalid=1697, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 15:59:22,275 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 170 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-12-14 15:59:22,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 3172 Invalid, 3281 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-12-14 15:59:22,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-12-14 15:59:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 482. [2022-12-14 15:59:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 362 states have (on average 1.511049723756906) internal successors, (547), 369 states have internal predecessors, (547), 95 states have call successors, (95), 26 states have call predecessors, (95), 24 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 15:59:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 736 transitions. [2022-12-14 15:59:22,611 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 736 transitions. Word has length 72 [2022-12-14 15:59:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:59:22,611 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 736 transitions. [2022-12-14 15:59:22,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-12-14 15:59:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 736 transitions. [2022-12-14 15:59:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 15:59:22,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:59:22,613 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] [2022-12-14 15:59:22,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:59:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 15:59:22,813 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:59:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:59:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1984972307, now seen corresponding path program 1 times [2022-12-14 15:59:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:59:22,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772846260] [2022-12-14 15:59:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:59:22,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:59:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:59:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:59:22,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:59:22,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772846260] [2022-12-14 15:59:22,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772846260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:59:22,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579612283] [2022-12-14 15:59:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:59:22,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:59:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:59:22,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:59:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bffbb54-9ca6-4421-a3a2-c1d6942f7b90/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:59:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:59:23,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:59:23,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:59:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:59:23,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:59:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 15:59:23,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579612283] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:59:23,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170773384] [2022-12-14 15:59:23,155 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-12-14 15:59:23,156 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:59:23,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:59:23,156 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:59:23,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:00:12,022 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 16:00:12,299 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 16:00:12,576 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 471 for LOIs [2022-12-14 16:00:41,971 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-12-14 16:00:42,253 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-12-14 16:00:49,156 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 439 for LOIs [2022-12-14 16:00:49,443 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 453 for LOIs [2022-12-14 16:00:50,034 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:01:32,015 WARN L233 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 603 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:01:44,640 WARN L233 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 605 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:01:55,460 WARN L233 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 604 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:02:06,708 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 602 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:02:21,066 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 574 DAG size of output: 451 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:02:26,736 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 570 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:03:24,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1170773384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:03:24,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:03:24,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-12-14 16:03:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331174792] [2022-12-14 16:03:24,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:03:24,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 16:03:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:03:24,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 16:03:24,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2606, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 16:03:24,924 INFO L87 Difference]: Start difference. First operand 482 states and 736 transitions. Second operand has 48 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 33 states have internal predecessors, (41), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 16:03:32,786 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 525 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:03:38,719 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 527 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:03:44,734 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 534 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:03:58,408 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 605 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:04:06,772 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 603 DAG size of output: 421 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:04:16,762 WARN L233 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 613 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:04:24,008 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 540 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:04:33,522 WARN L233 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 615 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:04:41,619 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 605 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:04:48,915 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 613 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:04:57,070 WARN L233 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 607 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:05:03,241 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 604 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:05:09,744 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 608 DAG size of output: 471 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:05:17,999 WARN L233 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 615 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:05:26,349 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 610 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)