./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product24.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_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/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_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/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_12989615-a8d2-40a8-8c94-13092014f14d/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 f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 --- 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 05:50:29,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:50:29,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:50:29,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:50:29,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:50:29,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:50:29,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:50:29,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:50:29,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:50:29,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:50:29,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:50:29,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:50:29,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:50:29,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:50:29,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:50:29,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:50:29,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:50:29,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:50:29,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:50:29,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:50:29,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:50:29,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:50:29,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:50:29,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:50:29,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:50:29,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:50:29,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:50:29,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:50:29,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:50:29,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:50:29,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:50:29,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:50:29,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:50:29,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:50:29,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:50:29,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:50:29,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:50:29,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:50:29,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:50:29,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:50:29,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:50:29,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:50:29,798 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:50:29,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:50:29,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:50:29,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:50:29,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:50:29,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:50:29,811 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:50:29,811 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:50:29,811 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:50:29,812 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:50:29,812 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:50:29,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:50:29,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:50:29,813 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:50:29,813 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:50:29,813 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:50:29,813 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:50:29,814 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:50:29,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:50:29,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:50:29,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:50:29,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:50:29,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:50:29,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:50:29,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:50:29,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:50:29,816 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:50:29,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:50:29,817 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:50:29,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:50:29,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:50:29,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:50:29,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:50:29,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:50:29,818 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:50:29,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:50:29,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:50:29,819 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:50:29,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:50:29,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:50:29,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:50:29,820 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_12989615-a8d2-40a8-8c94-13092014f14d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 [2022-12-14 05:50:30,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:50:30,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:50:30,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:50:30,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:50:30,041 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:50:30,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2022-12-14 05:50:32,709 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:50:32,967 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:50:32,968 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2022-12-14 05:50:32,982 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/data/0ddbba111/342238838bcc4d038c3eadbbf102f757/FLAG3c5e716ea [2022-12-14 05:50:32,992 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/data/0ddbba111/342238838bcc4d038c3eadbbf102f757 [2022-12-14 05:50:32,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:50:32,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:50:32,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:50:32,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:50:32,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:50:33,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:50:32" (1/1) ... [2022-12-14 05:50:33,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5252441b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33, skipping insertion in model container [2022-12-14 05:50:33,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:50:32" (1/1) ... [2022-12-14 05:50:33,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:50:33,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:50:33,219 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,312 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,315 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,324 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,326 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,359 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,360 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,362 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,397 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2022-12-14 05:50:33,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:50:33,413 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:50:33,438 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,460 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,472 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,476 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,477 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,482 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,483 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,493 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:50:33,509 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_12989615-a8d2-40a8-8c94-13092014f14d/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2022-12-14 05:50:33,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:50:33,530 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:50:33,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33 WrapperNode [2022-12-14 05:50:33,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:50:33,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:50:33,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:50:33,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:50:33,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,601 INFO L138 Inliner]: procedures = 130, calls = 210, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1001 [2022-12-14 05:50:33,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:50:33,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:50:33,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:50:33,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:50:33,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,657 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:50:33,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:50:33,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:50:33,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:50:33,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (1/1) ... [2022-12-14 05:50:33,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:50:33,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:50:33,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:50:33,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:50:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 05:50:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 05:50:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 05:50:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 05:50:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 05:50:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 05:50:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 05:50:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 05:50:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 05:50:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 05:50:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 05:50:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 05:50:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 05:50:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 05:50:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 05:50:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 05:50:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 05:50:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 05:50:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 05:50:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:50:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 05:50:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 05:50:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 05:50:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 05:50:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 05:50:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 05:50:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 05:50:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 05:50:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 05:50:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 05:50:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 05:50:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 05:50:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 05:50:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 05:50:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 05:50:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 05:50:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 05:50:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 05:50:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:50:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 05:50:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 05:50:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:50:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:50:33,910 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:50:33,912 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:50:34,428 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:50:34,701 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:50:34,701 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:50:34,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:34 BoogieIcfgContainer [2022-12-14 05:50:34,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:50:34,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:50:34,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:50:34,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:50:34,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:50:32" (1/3) ... [2022-12-14 05:50:34,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e18b662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:34, skipping insertion in model container [2022-12-14 05:50:34,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:33" (2/3) ... [2022-12-14 05:50:34,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e18b662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:34, skipping insertion in model container [2022-12-14 05:50:34,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:34" (3/3) ... [2022-12-14 05:50:34,710 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.c [2022-12-14 05:50:34,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:50:34,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:50:34,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:50:34,775 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;@5bf41cd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:50:34,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:50:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 105 states have internal predecessors, (137), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 05:50:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 05:50:34,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:34,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:34,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash -36981672, now seen corresponding path program 1 times [2022-12-14 05:50:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:34,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678609056] [2022-12-14 05:50:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:34,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:35,032 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 05:50:35,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678609056] [2022-12-14 05:50:35,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678609056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:50:35,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:50:35,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:50:35,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900916852] [2022-12-14 05:50:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:50:35,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:50:35,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:50:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:50:35,061 INFO L87 Difference]: Start difference. First operand has 174 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 105 states have internal predecessors, (137), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:50:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:35,173 INFO L93 Difference]: Finished difference Result 265 states and 352 transitions. [2022-12-14 05:50:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:50:35,175 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2022-12-14 05:50:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:35,184 INFO L225 Difference]: With dead ends: 265 [2022-12-14 05:50:35,184 INFO L226 Difference]: Without dead ends: 171 [2022-12-14 05:50:35,188 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 05:50:35,190 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:35,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:50:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-14 05:50:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-12-14 05:50:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 101 states have (on average 1.297029702970297) internal successors, (131), 102 states have internal predecessors, (131), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:50:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-12-14 05:50:35,229 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 68 [2022-12-14 05:50:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:35,230 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-12-14 05:50:35,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:50:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-12-14 05:50:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 05:50:35,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:35,233 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:35,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:50:35,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash -909722547, now seen corresponding path program 1 times [2022-12-14 05:50:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:35,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466789843] [2022-12-14 05:50:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:50:35,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:35,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466789843] [2022-12-14 05:50:35,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466789843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:50:35,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:50:35,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:50:35,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257620755] [2022-12-14 05:50:35,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:50:35,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:50:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:50:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:50:35,381 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:50:35,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:35,494 INFO L93 Difference]: Finished difference Result 261 states and 340 transitions. [2022-12-14 05:50:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:50:35,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-12-14 05:50:35,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:35,496 INFO L225 Difference]: With dead ends: 261 [2022-12-14 05:50:35,496 INFO L226 Difference]: Without dead ends: 173 [2022-12-14 05:50:35,497 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 05:50:35,498 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:35,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:50:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-14 05:50:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-12-14 05:50:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 104 states have internal predecessors, (133), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 05:50:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 232 transitions. [2022-12-14 05:50:35,513 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 232 transitions. Word has length 69 [2022-12-14 05:50:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:35,513 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 232 transitions. [2022-12-14 05:50:35,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:50:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 232 transitions. [2022-12-14 05:50:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 05:50:35,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:35,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:50:35,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash -361461375, now seen corresponding path program 1 times [2022-12-14 05:50:35,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:35,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652145227] [2022-12-14 05:50:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:35,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:35,602 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 05:50:35,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:35,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652145227] [2022-12-14 05:50:35,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652145227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:50:35,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:50:35,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:50:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336216618] [2022-12-14 05:50:35,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:50:35,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:50:35,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:50:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:50:35,604 INFO L87 Difference]: Start difference. First operand 173 states and 232 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:50:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:35,701 INFO L93 Difference]: Finished difference Result 376 states and 523 transitions. [2022-12-14 05:50:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:50:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-12-14 05:50:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:35,704 INFO L225 Difference]: With dead ends: 376 [2022-12-14 05:50:35,704 INFO L226 Difference]: Without dead ends: 221 [2022-12-14 05:50:35,705 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 05:50:35,706 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 57 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:35,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 404 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:50:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-12-14 05:50:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 216. [2022-12-14 05:50:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 135 states have (on average 1.3777777777777778) internal successors, (186), 136 states have internal predecessors, (186), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-14 05:50:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 307 transitions. [2022-12-14 05:50:35,728 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 307 transitions. Word has length 74 [2022-12-14 05:50:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:35,729 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 307 transitions. [2022-12-14 05:50:35,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:50:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 307 transitions. [2022-12-14 05:50:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 05:50:35,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:35,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:35,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:50:35,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1943776713, now seen corresponding path program 1 times [2022-12-14 05:50:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:35,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147043220] [2022-12-14 05:50:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:35,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:35,863 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 05:50:35,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:35,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147043220] [2022-12-14 05:50:35,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147043220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:50:35,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952043110] [2022-12-14 05:50:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:35,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:50:35,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:50:35,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:50:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:36,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:50:36,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:50:36,164 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 05:50:36,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:50:36,226 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 05:50:36,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952043110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:50:36,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2113015793] [2022-12-14 05:50:36,245 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-12-14 05:50:36,245 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:50:36,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:50:36,252 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:50:36,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:51:10,567 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:51:10,856 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:51:11,148 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 05:51:12,739 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 05:51:12,776 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-12-14 05:51:31,499 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-12-14 05:51:31,729 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 05:51:31,769 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-12-14 05:51:32,397 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:52:15,541 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 560 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:52:21,145 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 556 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:53:05,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2113015793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:53:05,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:53:05,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-12-14 05:53:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148613989] [2022-12-14 05:53:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:53:05,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 05:53:05,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:53:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 05:53:05,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2126, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 05:53:05,654 INFO L87 Difference]: Start difference. First operand 216 states and 307 transitions. Second operand has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 05:53:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:53:52,575 INFO L93 Difference]: Finished difference Result 624 states and 970 transitions. [2022-12-14 05:53:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-14 05:53:52,576 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 75 [2022-12-14 05:53:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:53:52,581 INFO L225 Difference]: With dead ends: 624 [2022-12-14 05:53:52,582 INFO L226 Difference]: Without dead ends: 426 [2022-12-14 05:53:52,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 123.5s TimeCoverageRelationStatistics Valid=206, Invalid=2986, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 05:53:52,583 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 339 mSDsluCounter, 4447 mSDsCounter, 0 mSdLazyCounter, 5646 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 5673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:53:52,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 4710 Invalid, 5673 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27 Valid, 5646 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2022-12-14 05:53:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-14 05:53:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 327. [2022-12-14 05:53:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 227 states have (on average 1.4405286343612336) internal successors, (327), 229 states have internal predecessors, (327), 74 states have call successors, (74), 26 states have call predecessors, (74), 25 states have return successors, (74), 71 states have call predecessors, (74), 73 states have call successors, (74) [2022-12-14 05:53:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 475 transitions. [2022-12-14 05:53:52,731 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 475 transitions. Word has length 75 [2022-12-14 05:53:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:53:52,732 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 475 transitions. [2022-12-14 05:53:52,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 05:53:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 475 transitions. [2022-12-14 05:53:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 05:53:52,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:53:52,734 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:53:52,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:53:52,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:53:52,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:53:52,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:53:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash 32299168, now seen corresponding path program 1 times [2022-12-14 05:53:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:53:52,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259512694] [2022-12-14 05:53:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:53:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:53:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:53:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:53:53,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:53:53,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259512694] [2022-12-14 05:53:53,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259512694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:53:53,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:53:53,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:53:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270404499] [2022-12-14 05:53:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:53:53,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:53:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:53:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:53:53,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:53:53,030 INFO L87 Difference]: Start difference. First operand 327 states and 475 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:53:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:53:53,336 INFO L93 Difference]: Finished difference Result 727 states and 1084 transitions. [2022-12-14 05:53:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:53:53,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-12-14 05:53:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:53:53,341 INFO L225 Difference]: With dead ends: 727 [2022-12-14 05:53:53,341 INFO L226 Difference]: Without dead ends: 442 [2022-12-14 05:53:53,342 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 05:53:53,343 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 55 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:53:53,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 416 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:53:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-14 05:53:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 435. [2022-12-14 05:53:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 310 states have (on average 1.4741935483870967) internal successors, (457), 312 states have internal predecessors, (457), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2022-12-14 05:53:53,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 655 transitions. [2022-12-14 05:53:53,527 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 655 transitions. Word has length 80 [2022-12-14 05:53:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:53:53,527 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 655 transitions. [2022-12-14 05:53:53,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:53:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 655 transitions. [2022-12-14 05:53:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 05:53:53,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:53:53,529 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:53:53,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:53:53,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:53:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:53:53,530 INFO L85 PathProgramCache]: Analyzing trace with hash 531482878, now seen corresponding path program 1 times [2022-12-14 05:53:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:53:53,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027684191] [2022-12-14 05:53:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:53:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:53:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:53:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:53:53,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:53:53,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027684191] [2022-12-14 05:53:53,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027684191] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:53:53,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045026045] [2022-12-14 05:53:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:53:53,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:53:53,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:53:53,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:53:53,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:53:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:53:53,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:53:53,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:53:53,871 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 05:53:53,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:53:53,908 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 05:53:53,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045026045] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:53:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577465951] [2022-12-14 05:53:53,910 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 05:53:53,910 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:53:53,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:53:53,911 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:53:53,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:54:24,059 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:54:24,349 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 05:54:25,908 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 05:54:25,946 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:54:26,239 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-12-14 05:55:02,672 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-12-14 05:55:02,902 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 05:55:02,942 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-12-14 05:55:03,550 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-12-14 05:55:03,589 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 435 for LOIs [2022-12-14 05:55:03,831 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:55:44,810 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 560 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:55:55,195 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 562 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:56:57,259 WARN L233 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 668 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:57:05,232 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 668 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:57:05,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1577465951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:57:05,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:57:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 05:57:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794468284] [2022-12-14 05:57:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:57:05,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 05:57:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:57:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 05:57:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3121, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 05:57:05,239 INFO L87 Difference]: Start difference. First operand 435 states and 655 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 05:57:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:57:58,856 INFO L93 Difference]: Finished difference Result 599 states and 892 transitions. [2022-12-14 05:57:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 05:57:58,857 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 80 [2022-12-14 05:57:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:57:58,860 INFO L225 Difference]: With dead ends: 599 [2022-12-14 05:57:58,860 INFO L226 Difference]: Without dead ends: 507 [2022-12-14 05:57:58,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 154.1s TimeCoverageRelationStatistics Valid=261, Invalid=4161, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 05:57:58,862 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 375 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 6317 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 6335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 6317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:57:58,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 4868 Invalid, 6335 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18 Valid, 6317 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-12-14 05:57:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-12-14 05:57:59,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 443. [2022-12-14 05:57:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 315 states have (on average 1.4666666666666666) internal successors, (462), 317 states have internal predecessors, (462), 100 states have call successors, (100), 28 states have call predecessors, (100), 27 states have return successors, (100), 97 states have call predecessors, (100), 99 states have call successors, (100) [2022-12-14 05:57:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 662 transitions. [2022-12-14 05:57:59,089 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 662 transitions. Word has length 80 [2022-12-14 05:57:59,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:57:59,089 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 662 transitions. [2022-12-14 05:57:59,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 05:57:59,090 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 662 transitions. [2022-12-14 05:57:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:57:59,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:57:59,091 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:57:59,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:57:59,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:57:59,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:57:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:57:59,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1734302003, now seen corresponding path program 1 times [2022-12-14 05:57:59,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:57:59,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020695463] [2022-12-14 05:57:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:57:59,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:57:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:57:59,405 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 05:57:59,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:57:59,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020695463] [2022-12-14 05:57:59,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020695463] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:57:59,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129692253] [2022-12-14 05:57:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:57:59,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:57:59,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:57:59,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:57:59,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:57:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:57:59,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:57:59,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:57:59,603 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 05:57:59,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:57:59,644 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 05:57:59,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129692253] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:57:59,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [558214593] [2022-12-14 05:57:59,647 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 05:57:59,647 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:57:59,647 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:57:59,647 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:57:59,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:58:42,333 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 05:58:42,622 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 05:58:42,922 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:59:20,920 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 579 DAG size of output: 391 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:59:28,300 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 579 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:59:41,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [558214593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:41,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:59:41,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 05:59:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389876892] [2022-12-14 05:59:41,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:41,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 05:59:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 05:59:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 05:59:41,128 INFO L87 Difference]: Start difference. First operand 443 states and 662 transitions. Second operand has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 06:00:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:04,865 INFO L93 Difference]: Finished difference Result 838 states and 1297 transitions. [2022-12-14 06:00:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 06:00:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 81 [2022-12-14 06:00:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:04,867 INFO L225 Difference]: With dead ends: 838 [2022-12-14 06:00:04,867 INFO L226 Difference]: Without dead ends: 550 [2022-12-14 06:00:04,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 06:00:04,869 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 198 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 3271 Invalid, 2272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-12-14 06:00:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-12-14 06:00:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 499. [2022-12-14 06:00:05,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 368 states have (on average 1.483695652173913) internal successors, (546), 371 states have internal predecessors, (546), 102 states have call successors, (102), 29 states have call predecessors, (102), 28 states have return successors, (102), 98 states have call predecessors, (102), 101 states have call successors, (102) [2022-12-14 06:00:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 750 transitions. [2022-12-14 06:00:05,210 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 750 transitions. Word has length 81 [2022-12-14 06:00:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:05,210 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 750 transitions. [2022-12-14 06:00:05,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 06:00:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 750 transitions. [2022-12-14 06:00:05,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 06:00:05,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:05,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:05,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:00:05,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:00:05,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:00:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1882703312, now seen corresponding path program 1 times [2022-12-14 06:00:05,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:05,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787377270] [2022-12-14 06:00:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:05,537 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 06:00:05,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:05,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787377270] [2022-12-14 06:00:05,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787377270] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:00:05,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679205263] [2022-12-14 06:00:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:05,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:00:05,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:00:05,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:00:05,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:00:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:05,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:00:05,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:00:05,778 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 06:00:05,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:00:05,834 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 06:00:05,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679205263] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:00:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [707738997] [2022-12-14 06:00:05,838 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-12-14 06:00:05,838 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:00:05,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:00:05,838 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:00:05,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:00:44,566 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 06:00:44,859 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-12-14 06:00:44,919 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 442 for LOIs [2022-12-14 06:00:45,291 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 249 for LOIs [2022-12-14 06:00:45,385 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 06:00:45,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:01:28,009 WARN L233 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 619 DAG size of output: 495 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:01:36,994 WARN L233 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 619 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:01:47,298 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 558 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:01:53,240 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 551 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:01:59,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [707738997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:01:59,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:01:59,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 06:01:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760078263] [2022-12-14 06:01:59,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:01:59,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 06:01:59,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:01:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 06:01:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 06:01:59,877 INFO L87 Difference]: Start difference. First operand 499 states and 750 transitions. Second operand has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 06:02:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:02:19,091 INFO L93 Difference]: Finished difference Result 907 states and 1404 transitions. [2022-12-14 06:02:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 06:02:19,091 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 84 [2022-12-14 06:02:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:02:19,093 INFO L225 Difference]: With dead ends: 907 [2022-12-14 06:02:19,093 INFO L226 Difference]: Without dead ends: 619 [2022-12-14 06:02:19,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 82.4s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 06:02:19,095 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 134 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:02:19,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 3754 Invalid, 3401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-12-14 06:02:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-12-14 06:02:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 566. [2022-12-14 06:02:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 428 states have (on average 1.4929906542056075) internal successors, (639), 432 states have internal predecessors, (639), 106 states have call successors, (106), 32 states have call predecessors, (106), 31 states have return successors, (106), 101 states have call predecessors, (106), 105 states have call successors, (106) [2022-12-14 06:02:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 851 transitions. [2022-12-14 06:02:19,474 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 851 transitions. Word has length 84 [2022-12-14 06:02:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:02:19,474 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 851 transitions. [2022-12-14 06:02:19,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 06:02:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 851 transitions. [2022-12-14 06:02:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 06:02:19,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:02:19,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:02:19,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:02:19,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:02:19,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:02:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:02:19,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1734986277, now seen corresponding path program 1 times [2022-12-14 06:02:19,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:02:19,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745315013] [2022-12-14 06:02:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:02:19,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:02:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:02:19,752 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 06:02:19,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:02:19,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745315013] [2022-12-14 06:02:19,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745315013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:02:19,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515242943] [2022-12-14 06:02:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:02:19,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:02:19,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:02:19,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:02:19,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12989615-a8d2-40a8-8c94-13092014f14d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:02:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:02:19,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:02:19,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:02:19,967 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 06:02:19,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:02:20,002 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 06:02:20,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515242943] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:02:20,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591051916] [2022-12-14 06:02:20,005 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 06:02:20,005 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:02:20,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:02:20,005 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:02:20,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:03:06,384 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 06:03:06,671 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 06:03:06,953 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 06:03:08,479 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 06:03:08,516 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-12-14 06:03:26,884 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-12-14 06:03:27,111 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 06:03:27,151 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-12-14 06:03:27,788 INFO L180 IcfgInterpreter]: Interpretation finished