./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/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_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/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_68675fae-5d9c-4035-ac9e-d4a5c7878318/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 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb --- 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 05:20:33,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:20:33,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:20:33,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:20:33,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:20:33,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:20:33,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:20:33,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:20:33,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:20:33,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:20:33,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:20:33,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:20:33,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:20:33,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:20:33,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:20:33,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:20:33,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:20:33,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:20:33,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:20:33,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:20:33,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:20:33,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:20:33,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:20:33,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:20:33,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:20:33,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:20:33,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:20:33,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:20:34,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:20:34,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:20:34,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:20:34,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:20:34,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:20:34,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:20:34,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:20:34,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:20:34,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:20:34,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:20:34,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:20:34,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:20:34,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:20:34,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:20:34,026 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:20:34,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:20:34,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:20:34,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:20:34,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:20:34,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:20:34,028 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:20:34,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:20:34,028 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:20:34,028 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:20:34,028 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:20:34,028 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:20:34,029 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:20:34,029 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:20:34,029 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:20:34,029 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:20:34,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:20:34,029 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:20:34,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:20:34,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:20:34,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:20:34,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:20:34,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:20:34,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:20:34,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:20:34,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:20:34,031 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:20:34,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:20:34,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:20:34,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:20:34,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:20:34,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:20:34,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:20:34,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:20:34,032 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:20:34,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:20:34,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:20:34,033 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:20:34,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:20:34,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:20:34,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:20:34,033 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_68675fae-5d9c-4035-ac9e-d4a5c7878318/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb [2022-12-14 05:20:34,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:20:34,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:20:34,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:20:34,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:20:34,264 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:20:34,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2022-12-14 05:20:36,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:20:37,088 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:20:37,088 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2022-12-14 05:20:37,101 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/data/2765b6986/c17c4463ed934520ace2002e3fc7efc3/FLAGfb2865af7 [2022-12-14 05:20:37,418 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/data/2765b6986/c17c4463ed934520ace2002e3fc7efc3 [2022-12-14 05:20:37,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:20:37,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:20:37,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:20:37,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:20:37,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:20:37,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21055353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37, skipping insertion in model container [2022-12-14 05:20:37,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:20:37,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:20:37,707 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,708 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_68675fae-5d9c-4035-ac9e-d4a5c7878318/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2022-12-14 05:20:37,746 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,747 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,749 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,759 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,760 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,766 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,767 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:20:37,781 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:20:37,835 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,835 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_68675fae-5d9c-4035-ac9e-d4a5c7878318/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2022-12-14 05:20:37,845 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,846 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,848 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,851 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,851 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,855 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,856 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:20:37,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:20:37,876 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:20:37,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37 WrapperNode [2022-12-14 05:20:37,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:20:37,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:20:37,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:20:37,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:20:37,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,949 INFO L138 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 832 [2022-12-14 05:20:37,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:20:37,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:20:37,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:20:37,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:20:37,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:20:37,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:20:37,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:20:37,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:20:37,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (1/1) ... [2022-12-14 05:20:37,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:20:37,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:20:38,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:20:38,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:20:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 05:20:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 05:20:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 05:20:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 05:20:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 05:20:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 05:20:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 05:20:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 05:20:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 05:20:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 05:20:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 05:20:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 05:20:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 05:20:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 05:20:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 05:20:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 05:20:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 05:20:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:20:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 05:20:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 05:20:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 05:20:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 05:20:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 05:20:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 05:20:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 05:20:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 05:20:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 05:20:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 05:20:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 05:20:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 05:20:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:20:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 05:20:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 05:20:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:20:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:20:38,184 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:20:38,186 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:20:38,665 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:20:38,920 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:20:38,920 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:20:38,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:20:38 BoogieIcfgContainer [2022-12-14 05:20:38,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:20:38,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:20:38,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:20:38,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:20:38,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:20:37" (1/3) ... [2022-12-14 05:20:38,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60714331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:20:38, skipping insertion in model container [2022-12-14 05:20:38,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:20:37" (2/3) ... [2022-12-14 05:20:38,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60714331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:20:38, skipping insertion in model container [2022-12-14 05:20:38,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:20:38" (3/3) ... [2022-12-14 05:20:38,928 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product37.cil.c [2022-12-14 05:20:38,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:20:38,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:20:38,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:20:38,983 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;@5099c863, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:20:38,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:20:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-12-14 05:20:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 05:20:38,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:38,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:20:38,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:20:38,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1742977683, now seen corresponding path program 1 times [2022-12-14 05:20:39,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:39,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703108243] [2022-12-14 05:20:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:39,224 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 05:20:39,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:39,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703108243] [2022-12-14 05:20:39,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703108243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:20:39,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:20:39,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:20:39,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205616239] [2022-12-14 05:20:39,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:20:39,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:20:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:20:39,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:20:39,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:20:39,262 INFO L87 Difference]: Start difference. First operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:20:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:20:39,352 INFO L93 Difference]: Finished difference Result 199 states and 266 transitions. [2022-12-14 05:20:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:20:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2022-12-14 05:20:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:20:39,361 INFO L225 Difference]: With dead ends: 199 [2022-12-14 05:20:39,361 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 05:20:39,364 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 05:20:39,366 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:20:39,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:20:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 05:20:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-12-14 05:20:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 83 states have internal predecessors, (108), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-14 05:20:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2022-12-14 05:20:39,404 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 54 [2022-12-14 05:20:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:20:39,405 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2022-12-14 05:20:39,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:20:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2022-12-14 05:20:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 05:20:39,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:39,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:20:39,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:20:39,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:20:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1541810193, now seen corresponding path program 1 times [2022-12-14 05:20:39,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:39,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349349340] [2022-12-14 05:20:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:39,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:39,531 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 05:20:39,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:39,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349349340] [2022-12-14 05:20:39,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349349340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:20:39,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:20:39,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:20:39,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239635068] [2022-12-14 05:20:39,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:20:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:20:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:20:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:20:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:20:39,535 INFO L87 Difference]: Start difference. First operand 138 states and 187 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:20:39,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:20:39,616 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2022-12-14 05:20:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:20:39,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 55 [2022-12-14 05:20:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:20:39,619 INFO L225 Difference]: With dead ends: 195 [2022-12-14 05:20:39,619 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 05:20:39,620 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 05:20:39,621 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:20:39,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:20:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 05:20:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-12-14 05:20:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 85 states have internal predecessors, (110), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-14 05:20:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 189 transitions. [2022-12-14 05:20:39,638 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 189 transitions. Word has length 55 [2022-12-14 05:20:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:20:39,639 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 189 transitions. [2022-12-14 05:20:39,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:20:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 189 transitions. [2022-12-14 05:20:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 05:20:39,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:39,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:20:39,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:20:39,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:20:39,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1039045930, now seen corresponding path program 1 times [2022-12-14 05:20:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:39,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628462638] [2022-12-14 05:20:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:39,712 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 05:20:39,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:39,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628462638] [2022-12-14 05:20:39,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628462638] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:20:39,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:20:39,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:20:39,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992204640] [2022-12-14 05:20:39,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:20:39,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:20:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:20:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:20:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:20:39,715 INFO L87 Difference]: Start difference. First operand 140 states and 189 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:20:39,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:20:39,814 INFO L93 Difference]: Finished difference Result 310 states and 437 transitions. [2022-12-14 05:20:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:20:39,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2022-12-14 05:20:39,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:20:39,816 INFO L225 Difference]: With dead ends: 310 [2022-12-14 05:20:39,816 INFO L226 Difference]: Without dead ends: 188 [2022-12-14 05:20:39,817 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 05:20:39,818 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 57 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:20:39,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 334 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:20:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-14 05:20:39,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2022-12-14 05:20:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 117 states have internal predecessors, (163), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:20:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2022-12-14 05:20:39,830 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 60 [2022-12-14 05:20:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:20:39,830 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2022-12-14 05:20:39,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:20:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2022-12-14 05:20:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 05:20:39,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:39,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:20:39,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:20:39,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:20:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:39,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1380719275, now seen corresponding path program 1 times [2022-12-14 05:20:39,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:39,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759858219] [2022-12-14 05:20:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:39,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:39,929 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 05:20:39,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:39,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759858219] [2022-12-14 05:20:39,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759858219] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:20:39,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327721459] [2022-12-14 05:20:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:39,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:20:39,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:20:39,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:20:39,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:20:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:40,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:20:40,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:20:40,195 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 05:20:40,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:20:40,254 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 05:20:40,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327721459] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:20:40,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1270096239] [2022-12-14 05:20:40,272 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-12-14 05:20:40,272 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:20:40,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:20:40,281 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:20:40,281 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:21:14,598 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 05:21:14,879 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:21:15,154 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:21:55,610 WARN L233 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 592 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:06,848 WARN L233 SmtUtils]: Spent 10.98s on a formula simplification. DAG size of input: 594 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:11,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1270096239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:22:11,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:22:11,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 05:22:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558674919] [2022-12-14 05:22:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:22:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 05:22:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:22:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 05:22:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:22:11,066 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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 05:22:19,087 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 505 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:26,598 WARN L233 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 505 DAG size of output: 419 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:33,253 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 591 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:39,625 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 589 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:45,237 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 590 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:52,823 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 589 DAG size of output: 406 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:57,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:22:57,353 INFO L93 Difference]: Finished difference Result 449 states and 696 transitions. [2022-12-14 05:22:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 05:22:57,354 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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 61 [2022-12-14 05:22:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:22:57,356 INFO L225 Difference]: With dead ends: 449 [2022-12-14 05:22:57,356 INFO L226 Difference]: Without dead ends: 284 [2022-12-14 05:22:57,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 96.2s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-12-14 05:22:57,358 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 140 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:22:57,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2438 Invalid, 1831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 05:22:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-12-14 05:22:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 211. [2022-12-14 05:22:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 144 states have internal predecessors, (202), 51 states have call successors, (51), 16 states have call predecessors, (51), 16 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:22:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 303 transitions. [2022-12-14 05:22:57,442 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 303 transitions. Word has length 61 [2022-12-14 05:22:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:22:57,443 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 303 transitions. [2022-12-14 05:22:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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 05:22:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 303 transitions. [2022-12-14 05:22:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 05:22:57,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:22:57,445 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:22:57,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:22:57,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:22:57,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:22:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:22:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash -929266219, now seen corresponding path program 1 times [2022-12-14 05:22:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:22:57,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125676151] [2022-12-14 05:22:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:22:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:22:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:22:57,768 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 05:22:57,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:22:57,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125676151] [2022-12-14 05:22:57,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125676151] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:22:57,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381723153] [2022-12-14 05:22:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:22:57,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:22:57,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:22:57,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:22:57,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:22:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:22:57,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:22:57,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:22:57,968 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 05:22:57,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:22:58,009 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 05:22:58,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381723153] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:22:58,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134052180] [2022-12-14 05:22:58,012 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-12-14 05:22:58,012 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:22:58,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:22:58,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:22:58,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:23:34,393 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:23:34,683 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 05:23:34,970 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 240 for LOIs [2022-12-14 05:23:36,239 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 05:23:36,274 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 242 for LOIs [2022-12-14 05:23:38,001 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 233 for LOIs [2022-12-14 05:23:38,034 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-12-14 05:23:39,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:24:22,456 WARN L233 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:24:29,482 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 593 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:25:01,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [134052180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:25:01,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:25:01,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-12-14 05:25:01,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309679461] [2022-12-14 05:25:01,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:25:01,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 05:25:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:25:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 05:25:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2129, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 05:25:01,733 INFO L87 Difference]: Start difference. First operand 211 states and 303 transitions. Second operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 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 05:25:15,542 WARN L233 SmtUtils]: Spent 11.83s on a formula simplification. DAG size of input: 496 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:25:47,062 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 586 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:25:52,766 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 598 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:25:58,437 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 588 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:26:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:14,929 INFO L93 Difference]: Finished difference Result 528 states and 811 transitions. [2022-12-14 05:26:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 05:26:14,930 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 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 67 [2022-12-14 05:26:14,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:14,932 INFO L225 Difference]: With dead ends: 528 [2022-12-14 05:26:14,932 INFO L226 Difference]: Without dead ends: 363 [2022-12-14 05:26:14,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 141.3s TimeCoverageRelationStatistics Valid=275, Invalid=3757, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 05:26:14,934 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 340 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 4613 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 4613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:14,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 3976 Invalid, 4669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 4613 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-12-14 05:26:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-12-14 05:26:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 299. [2022-12-14 05:26:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 218 states have (on average 1.463302752293578) internal successors, (319), 221 states have internal predecessors, (319), 59 states have call successors, (59), 22 states have call predecessors, (59), 21 states have return successors, (59), 55 states have call predecessors, (59), 58 states have call successors, (59) [2022-12-14 05:26:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 437 transitions. [2022-12-14 05:26:15,133 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 437 transitions. Word has length 67 [2022-12-14 05:26:15,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:15,133 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 437 transitions. [2022-12-14 05:26:15,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 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 05:26:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 437 transitions. [2022-12-14 05:26:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 05:26:15,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:15,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:15,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:26:15,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:15,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:26:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1020673306, now seen corresponding path program 1 times [2022-12-14 05:26:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:15,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079924425] [2022-12-14 05:26:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:15,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:15,458 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 05:26:15,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:15,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079924425] [2022-12-14 05:26:15,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079924425] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:15,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346197831] [2022-12-14 05:26:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:15,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:15,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:15,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:15,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:26:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:15,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:26:15,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:15,631 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 05:26:15,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:15,665 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 05:26:15,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346197831] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:15,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [526221232] [2022-12-14 05:26:15,667 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 05:26:15,667 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:15,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:15,667 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:15,668 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:53,006 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 05:26:53,294 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-12-14 05:26:53,354 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-12-14 05:26:53,415 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:26:53,713 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-12-14 05:26:53,775 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:27:33,744 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 623 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:27:50,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [526221232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:27:50,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:27:50,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 05:27:50,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359163913] [2022-12-14 05:27:50,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:27:50,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 05:27:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:27:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 05:27:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 05:27:50,850 INFO L87 Difference]: Start difference. First operand 299 states and 437 transitions. Second operand has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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 05:28:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:28:07,702 INFO L93 Difference]: Finished difference Result 583 states and 894 transitions. [2022-12-14 05:28:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 05:28:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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 70 [2022-12-14 05:28:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:28:07,705 INFO L225 Difference]: With dead ends: 583 [2022-12-14 05:28:07,705 INFO L226 Difference]: Without dead ends: 418 [2022-12-14 05:28:07,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 64.2s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 05:28:07,706 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 193 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:28:07,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 2999 Invalid, 2910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-12-14 05:28:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-12-14 05:28:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 366. [2022-12-14 05:28:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 278 states have (on average 1.485611510791367) internal successors, (413), 282 states have internal predecessors, (413), 63 states have call successors, (63), 25 states have call predecessors, (63), 24 states have return successors, (63), 58 states have call predecessors, (63), 62 states have call successors, (63) [2022-12-14 05:28:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 539 transitions. [2022-12-14 05:28:07,997 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 539 transitions. Word has length 70 [2022-12-14 05:28:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:28:07,997 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 539 transitions. [2022-12-14 05:28:07,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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 05:28:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 539 transitions. [2022-12-14 05:28:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 05:28:07,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:28:07,998 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] [2022-12-14 05:28:08,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 05:28:08,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:28:08,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:28:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:28:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1927759113, now seen corresponding path program 1 times [2022-12-14 05:28:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:28:08,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310633225] [2022-12-14 05:28:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:28:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:28:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:28:08,323 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 05:28:08,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:28:08,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310633225] [2022-12-14 05:28:08,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310633225] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:28:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057712410] [2022-12-14 05:28:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:28:08,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:28:08,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:28:08,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:28:08,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:28:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:28:08,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:28:08,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:28:08,510 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 05:28:08,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:28:08,546 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 05:28:08,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057712410] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:28:08,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [106293214] [2022-12-14 05:28:08,550 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-12-14 05:28:08,550 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:28:08,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:28:08,551 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:28:08,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:28:58,294 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 05:28:58,572 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:28:58,869 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 247 for LOIs [2022-12-14 05:29:00,744 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 05:29:00,790 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 247 for LOIs [2022-12-14 05:29:03,222 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2022-12-14 05:29:03,295 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 470 for LOIs [2022-12-14 05:29:08,268 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:29:49,553 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 580 DAG size of output: 445 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:29:54,979 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 578 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:10,068 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 577 DAG size of output: 444 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:16,558 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 575 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:32,405 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 577 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:53,371 WARN L233 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 470 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:31:14,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [106293214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:31:14,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:31:14,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [4, 4, 4] total 52 [2022-12-14 05:31:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631481458] [2022-12-14 05:31:14,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:31:14,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-14 05:31:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:31:14,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-14 05:31:14,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2495, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 05:31:14,721 INFO L87 Difference]: Start difference. First operand 366 states and 539 transitions. Second operand has 47 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 32 states have internal predecessors, (39), 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 05:32:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:50,632 INFO L93 Difference]: Finished difference Result 652 states and 981 transitions. [2022-12-14 05:32:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-14 05:32:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 32 states have internal predecessors, (39), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 69 [2022-12-14 05:32:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:50,635 INFO L225 Difference]: With dead ends: 652 [2022-12-14 05:32:50,635 INFO L226 Difference]: Without dead ends: 487 [2022-12-14 05:32:50,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 210.3s TimeCoverageRelationStatistics Valid=621, Invalid=5231, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 05:32:50,637 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 526 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 4174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:50,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 3452 Invalid, 4174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-12-14 05:32:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-12-14 05:32:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 380. [2022-12-14 05:32:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 292 states have (on average 1.4897260273972603) internal successors, (435), 296 states have internal predecessors, (435), 63 states have call successors, (63), 25 states have call predecessors, (63), 24 states have return successors, (63), 58 states have call predecessors, (63), 62 states have call successors, (63) [2022-12-14 05:32:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 561 transitions. [2022-12-14 05:32:50,976 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 561 transitions. Word has length 69 [2022-12-14 05:32:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:50,977 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 561 transitions. [2022-12-14 05:32:50,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 32 states have internal predecessors, (39), 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 05:32:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 561 transitions. [2022-12-14 05:32:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 05:32:50,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:50,978 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:50,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:32:51,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68675fae-5d9c-4035-ac9e-d4a5c7878318/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 05:32:51,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:32:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:51,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1991584167, now seen corresponding path program 1 times [2022-12-14 05:32:51,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:51,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663936112] [2022-12-14 05:32:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:51,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 05:32:51,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:51,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663936112] [2022-12-14 05:32:51,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663936112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:51,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:51,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:32:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151477874] [2022-12-14 05:32:51,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:51,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:32:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:32:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:32:51,320 INFO L87 Difference]: Start difference. First operand 380 states and 561 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-14 05:32:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:51,813 INFO L93 Difference]: Finished difference Result 394 states and 581 transitions. [2022-12-14 05:32:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:32:51,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 72 [2022-12-14 05:32:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:51,814 INFO L225 Difference]: With dead ends: 394 [2022-12-14 05:32:51,814 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:32:51,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:32:51,815 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 81 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:51,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 757 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:32:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:32:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:32:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:32:51,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2022-12-14 05:32:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:51,816 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:32:51,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-14 05:32:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:32:51,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:32:51,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:32:51,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:32:51,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:32:56,935 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 550 DAG size of output: 3 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 05:33:06,758 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 550 DAG size of output: 3 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 05:33:12,877 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 550 DAG size of output: 3 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 05:33:28,284 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 550 DAG size of output: 3 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 05:34:18,440 WARN L233 SmtUtils]: Spent 17.63s on a formula simplification. DAG size of input: 822 DAG size of output: 807 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)