./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product31.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_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/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_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/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_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/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 aa31ba7b6b6c5a20100c4ed7bd6bb53a6560ae9fc8557479e094a44cc1bad058 --- 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 10:07:36,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:07:36,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:07:36,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:07:36,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:07:36,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:07:36,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:07:36,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:07:36,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:07:36,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:07:36,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:07:36,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:07:36,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:07:36,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:07:36,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:07:36,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:07:36,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:07:36,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:07:36,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:07:36,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:07:36,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:07:36,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:07:36,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:07:36,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:07:36,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:07:36,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:07:36,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:07:36,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:07:36,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:07:36,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:07:36,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:07:36,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:07:36,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:07:36,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:07:36,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:07:36,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:07:36,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:07:36,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:07:36,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:07:36,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:07:36,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:07:36,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:07:36,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:07:36,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:07:36,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:07:36,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:07:36,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:07:36,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:07:36,563 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:07:36,569 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:07:36,569 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:07:36,570 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:07:36,570 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:07:36,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:07:36,570 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:07:36,570 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:07:36,570 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:07:36,571 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:07:36,571 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:07:36,571 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:07:36,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:07:36,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:07:36,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:07:36,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:07:36,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:07:36,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:07:36,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:07:36,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:07:36,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:07:36,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:07:36,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:07:36,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:07:36,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:07:36,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:07:36,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:07:36,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:07:36,575 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:07:36,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:07:36,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:07:36,575 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:07:36,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:07:36,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:07:36,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:07:36,576 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_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa31ba7b6b6c5a20100c4ed7bd6bb53a6560ae9fc8557479e094a44cc1bad058 [2022-12-14 10:07:36,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:07:36,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:07:36,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:07:36,819 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:07:36,819 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:07:36,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec8_product31.cil.c [2022-12-14 10:07:39,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:07:39,602 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:07:39,602 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/sv-benchmarks/c/product-lines/email_spec8_product31.cil.c [2022-12-14 10:07:39,616 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/data/cef5aaf07/ab5fefe778b7405abf419f8798bbb023/FLAG2f77c88c4 [2022-12-14 10:07:39,958 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/data/cef5aaf07/ab5fefe778b7405abf419f8798bbb023 [2022-12-14 10:07:39,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:07:39,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:07:39,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:07:39,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:07:39,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:07:39,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:07:39" (1/1) ... [2022-12-14 10:07:39,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575fd93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:39, skipping insertion in model container [2022-12-14 10:07:39,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:07:39" (1/1) ... [2022-12-14 10:07:39,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:07:40,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:07:40,250 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_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/sv-benchmarks/c/product-lines/email_spec8_product31.cil.c[36672,36685] [2022-12-14 10:07:40,335 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,339 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,350 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,376 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,377 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,379 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,385 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,386 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:07:40,395 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:07:40,431 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_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/sv-benchmarks/c/product-lines/email_spec8_product31.cil.c[36672,36685] [2022-12-14 10:07:40,455 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,458 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,463 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,471 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,472 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,473 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,477 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,478 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:07:40,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:07:40,497 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:07:40,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40 WrapperNode [2022-12-14 10:07:40,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:07:40,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:07:40,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:07:40,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:07:40,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,552 INFO L138 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1032 [2022-12-14 10:07:40,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:07:40,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:07:40,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:07:40,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:07:40,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:07:40,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:07:40,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:07:40,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:07:40,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (1/1) ... [2022-12-14 10:07:40,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:07:40,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:07:40,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:07:40,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:07:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 10:07:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 10:07:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 10:07:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 10:07:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 10:07:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 10:07:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 10:07:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 10:07:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 10:07:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 10:07:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 10:07:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 10:07:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 10:07:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 10:07:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 10:07:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 10:07:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 10:07:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 10:07:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 10:07:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 10:07:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 10:07:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 10:07:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 10:07:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 10:07:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 10:07:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:07:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 10:07:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 10:07:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 10:07:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 10:07:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 10:07:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 10:07:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 10:07:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 10:07:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 10:07:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 10:07:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 10:07:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 10:07:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 10:07:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 10:07:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 10:07:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 10:07:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 10:07:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 10:07:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 10:07:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 10:07:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:07:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 10:07:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 10:07:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:07:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:07:40,823 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:07:40,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:07:41,392 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:07:41,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:07:41,653 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:07:41,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:07:41 BoogieIcfgContainer [2022-12-14 10:07:41,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:07:41,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:07:41,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:07:41,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:07:41,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:07:39" (1/3) ... [2022-12-14 10:07:41,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc5969c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:07:41, skipping insertion in model container [2022-12-14 10:07:41,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:07:40" (2/3) ... [2022-12-14 10:07:41,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc5969c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:07:41, skipping insertion in model container [2022-12-14 10:07:41,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:07:41" (3/3) ... [2022-12-14 10:07:41,660 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product31.cil.c [2022-12-14 10:07:41,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:07:41,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:07:41,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:07:41,734 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;@637eae95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:07:41,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:07:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-12-14 10:07:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 10:07:41,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:41,747 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] [2022-12-14 10:07:41,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -241911432, now seen corresponding path program 1 times [2022-12-14 10:07:41,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:41,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957678975] [2022-12-14 10:07:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:42,004 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 10:07:42,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:42,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957678975] [2022-12-14 10:07:42,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957678975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:07:42,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:07:42,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:07:42,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143943119] [2022-12-14 10:07:42,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:07:42,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:07:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:07:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:07:42,042 INFO L87 Difference]: Start difference. First operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 10:07:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:42,170 INFO L93 Difference]: Finished difference Result 319 states and 422 transitions. [2022-12-14 10:07:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:07:42,173 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-12-14 10:07:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:42,184 INFO L225 Difference]: With dead ends: 319 [2022-12-14 10:07:42,184 INFO L226 Difference]: Without dead ends: 198 [2022-12-14 10:07:42,189 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 10:07:42,192 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:42,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:07:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-14 10:07:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-12-14 10:07:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 115 states have (on average 1.2869565217391303) internal successors, (148), 118 states have internal predecessors, (148), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-12-14 10:07:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2022-12-14 10:07:42,239 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 64 [2022-12-14 10:07:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:42,240 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2022-12-14 10:07:42,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 10:07:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2022-12-14 10:07:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 10:07:42,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:42,243 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] [2022-12-14 10:07:42,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:07:42,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:42,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1353453203, now seen corresponding path program 1 times [2022-12-14 10:07:42,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:42,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99418480] [2022-12-14 10:07:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:42,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:42,363 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 10:07:42,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:42,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99418480] [2022-12-14 10:07:42,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99418480] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:07:42,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:07:42,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:07:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363144541] [2022-12-14 10:07:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:07:42,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:07:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:07:42,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:07:42,366 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 10:07:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:42,459 INFO L93 Difference]: Finished difference Result 315 states and 410 transitions. [2022-12-14 10:07:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:07:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-12-14 10:07:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:42,461 INFO L225 Difference]: With dead ends: 315 [2022-12-14 10:07:42,461 INFO L226 Difference]: Without dead ends: 200 [2022-12-14 10:07:42,462 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 10:07:42,463 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:42,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 455 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:07:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-14 10:07:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-12-14 10:07:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 117 states have (on average 1.2820512820512822) internal successors, (150), 120 states have internal predecessors, (150), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-12-14 10:07:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2022-12-14 10:07:42,475 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 65 [2022-12-14 10:07:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:42,475 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2022-12-14 10:07:42,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 10:07:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2022-12-14 10:07:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 10:07:42,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:42,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:07:42,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:07:42,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:42,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1252495075, now seen corresponding path program 1 times [2022-12-14 10:07:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:42,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368686903] [2022-12-14 10:07:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:42,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:42,543 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 10:07:42,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:42,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368686903] [2022-12-14 10:07:42,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368686903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:07:42,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:07:42,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:07:42,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875769723] [2022-12-14 10:07:42,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:07:42,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:07:42,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:07:42,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:07:42,546 INFO L87 Difference]: Start difference. First operand 200 states and 267 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 10:07:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:07:42,643 INFO L93 Difference]: Finished difference Result 430 states and 593 transitions. [2022-12-14 10:07:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:07:42,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-12-14 10:07:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:07:42,645 INFO L225 Difference]: With dead ends: 430 [2022-12-14 10:07:42,645 INFO L226 Difference]: Without dead ends: 248 [2022-12-14 10:07:42,646 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 10:07:42,647 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 57 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:07:42,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 466 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:07:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-12-14 10:07:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2022-12-14 10:07:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 152 states have internal predecessors, (203), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-12-14 10:07:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 342 transitions. [2022-12-14 10:07:42,663 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 342 transitions. Word has length 70 [2022-12-14 10:07:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:07:42,663 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 342 transitions. [2022-12-14 10:07:42,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 10:07:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 342 transitions. [2022-12-14 10:07:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 10:07:42,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:07:42,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:07:42,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:07:42,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:07:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:07:42,666 INFO L85 PathProgramCache]: Analyzing trace with hash -399698874, now seen corresponding path program 1 times [2022-12-14 10:07:42,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:07:42,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258416401] [2022-12-14 10:07:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:42,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:07:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:42,803 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 10:07:42,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:07:42,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258416401] [2022-12-14 10:07:42,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258416401] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:07:42,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842571181] [2022-12-14 10:07:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:07:42,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:07:42,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:07:42,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:07:42,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:07:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:07:43,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:07:43,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:07:43,098 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 10:07:43,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:07:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 10:07:43,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842571181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:07:43,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062442658] [2022-12-14 10:07:43,168 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-12-14 10:07:43,169 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:07:43,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:07:43,175 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:07:43,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:08:07,940 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:08:08,270 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 10:08:08,590 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:08:54,558 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 577 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:09:04,912 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 549 DAG size of output: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:09:04,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1062442658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:09:04,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:09:04,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 10:09:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632077585] [2022-12-14 10:09:04,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:09:04,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 10:09:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:09:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 10:09:04,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 10:09:04,919 INFO L87 Difference]: Start difference. First operand 243 states and 342 transitions. Second operand has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 10:09:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:09:10,418 INFO L93 Difference]: Finished difference Result 565 states and 845 transitions. [2022-12-14 10:09:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 10:09:10,419 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 71 [2022-12-14 10:09:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:09:10,421 INFO L225 Difference]: With dead ends: 565 [2022-12-14 10:09:10,421 INFO L226 Difference]: Without dead ends: 340 [2022-12-14 10:09:10,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 56.3s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 10:09:10,424 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 131 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:09:10,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 3181 Invalid, 1794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-14 10:09:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-12-14 10:09:10,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2022-12-14 10:09:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 174 states have internal predecessors, (236), 70 states have call successors, (70), 24 states have call predecessors, (70), 24 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-12-14 10:09:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 375 transitions. [2022-12-14 10:09:10,527 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 375 transitions. Word has length 71 [2022-12-14 10:09:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:09:10,528 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 375 transitions. [2022-12-14 10:09:10,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 10:09:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 375 transitions. [2022-12-14 10:09:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 10:09:10,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:09:10,531 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] [2022-12-14 10:09:10,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:09:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:09:10,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:09:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:09:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash -49063776, now seen corresponding path program 1 times [2022-12-14 10:09:10,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:09:10,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614959565] [2022-12-14 10:09:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:09:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:09:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:09:10,842 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 10:09:10,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:09:10,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614959565] [2022-12-14 10:09:10,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614959565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:09:10,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:09:10,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:09:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999363962] [2022-12-14 10:09:10,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:09:10,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:09:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:09:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:09:10,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:09:10,845 INFO L87 Difference]: Start difference. First operand 266 states and 375 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 10:09:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:09:11,174 INFO L93 Difference]: Finished difference Result 625 states and 914 transitions. [2022-12-14 10:09:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:09:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 76 [2022-12-14 10:09:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:09:11,176 INFO L225 Difference]: With dead ends: 625 [2022-12-14 10:09:11,176 INFO L226 Difference]: Without dead ends: 383 [2022-12-14 10:09:11,177 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 10:09:11,177 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 55 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:09:11,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 475 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:09:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-12-14 10:09:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2022-12-14 10:09:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 258 states have (on average 1.441860465116279) internal successors, (372), 261 states have internal predecessors, (372), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 10:09:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 561 transitions. [2022-12-14 10:09:11,317 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 561 transitions. Word has length 76 [2022-12-14 10:09:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:09:11,317 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 561 transitions. [2022-12-14 10:09:11,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 10:09:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 561 transitions. [2022-12-14 10:09:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 10:09:11,319 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:09:11,319 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] [2022-12-14 10:09:11,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:09:11,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:09:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:09:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1507940000, now seen corresponding path program 1 times [2022-12-14 10:09:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:09:11,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880651220] [2022-12-14 10:09:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:09:11,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:09:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:09:11,417 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 10:09:11,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:09:11,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880651220] [2022-12-14 10:09:11,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880651220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:09:11,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289491247] [2022-12-14 10:09:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:09:11,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:09:11,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:09:11,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:09:11,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:09:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:09:11,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:09:11,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:09:11,627 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 10:09:11,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:09:11,667 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 10:09:11,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289491247] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:09:11,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1942147675] [2022-12-14 10:09:11,669 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-12-14 10:09:11,670 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:09:11,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:09:11,670 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:09:11,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:09:51,794 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:09:52,111 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-12-14 10:09:52,418 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 10:09:54,351 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-12-14 10:09:54,390 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-12-14 10:10:13,510 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 227 for LOIs [2022-12-14 10:10:13,550 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2022-12-14 10:10:13,621 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 253 for LOIs [2022-12-14 10:10:13,666 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 479 for LOIs [2022-12-14 10:10:15,637 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:10:58,726 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 587 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:11:04,743 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 589 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:11:10,824 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 588 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:11:17,221 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 586 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:12:03,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1942147675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:03,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:12:03,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-12-14 10:12:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365530089] [2022-12-14 10:12:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:03,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-14 10:12:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-14 10:12:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3040, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 10:12:03,568 INFO L87 Difference]: Start difference. First operand 378 states and 561 transitions. Second operand has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 10:12:49,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:49,872 INFO L93 Difference]: Finished difference Result 886 states and 1367 transitions. [2022-12-14 10:12:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-14 10:12:49,873 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 77 [2022-12-14 10:12:49,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:49,875 INFO L225 Difference]: With dead ends: 886 [2022-12-14 10:12:49,875 INFO L226 Difference]: Without dead ends: 571 [2022-12-14 10:12:49,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 132.5s TimeCoverageRelationStatistics Valid=244, Invalid=4868, Unknown=0, NotChecked=0, Total=5112 [2022-12-14 10:12:49,877 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 163 mSDsluCounter, 6870 mSDsCounter, 0 mSdLazyCounter, 7359 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 7115 SdHoareTripleChecker+Invalid, 7381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 7359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:49,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 7115 Invalid, 7381 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [22 Valid, 7359 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2022-12-14 10:12:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-14 10:12:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 469. [2022-12-14 10:12:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 332 states have (on average 1.4698795180722892) internal successors, (488), 337 states have internal predecessors, (488), 106 states have call successors, (106), 32 states have call predecessors, (106), 30 states have return successors, (105), 101 states have call predecessors, (105), 105 states have call successors, (105) [2022-12-14 10:12:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 699 transitions. [2022-12-14 10:12:50,112 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 699 transitions. Word has length 77 [2022-12-14 10:12:50,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:50,112 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 699 transitions. [2022-12-14 10:12:50,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 10:12:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 699 transitions. [2022-12-14 10:12:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 10:12:50,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:50,114 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 10:12:50,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:12:50,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 10:12:50,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:12:50,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2046708649, now seen corresponding path program 1 times [2022-12-14 10:12:50,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:50,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488279707] [2022-12-14 10:12:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:50,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:50,492 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 10:12:50,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488279707] [2022-12-14 10:12:50,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488279707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495112410] [2022-12-14 10:12:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:50,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:50,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:50,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:50,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:12:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:50,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:12:50,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:50,715 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 10:12:50,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:50,760 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 10:12:50,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495112410] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:50,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [771235740] [2022-12-14 10:12:50,764 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 10:12:50,764 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:12:50,764 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:12:50,765 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:12:50,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:13:26,015 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:13:26,325 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 236 for LOIs [2022-12-14 10:13:26,389 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 245 for LOIs [2022-12-14 10:13:26,455 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 251 for LOIs [2022-12-14 10:13:26,537 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 10:13:26,857 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:14:09,594 WARN L233 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 623 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:14:20,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [771235740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:14:20,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:14:20,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 10:14:20,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025552591] [2022-12-14 10:14:20,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:14:20,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 10:14:20,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:14:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 10:14:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:14:20,996 INFO L87 Difference]: Start difference. First operand 469 states and 699 transitions. Second operand has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 10:14:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:14:40,028 INFO L93 Difference]: Finished difference Result 943 states and 1458 transitions. [2022-12-14 10:14:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 10:14:40,029 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 80 [2022-12-14 10:14:40,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:14:40,031 INFO L225 Difference]: With dead ends: 943 [2022-12-14 10:14:40,031 INFO L226 Difference]: Without dead ends: 628 [2022-12-14 10:14:40,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 60.1s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 10:14:40,032 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 167 mSDsluCounter, 4288 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 4532 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:14:40,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 4532 Invalid, 3816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-12-14 10:14:40,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-12-14 10:14:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 554. [2022-12-14 10:14:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 409 states have (on average 1.4987775061124695) internal successors, (613), 416 states have internal predecessors, (613), 111 states have call successors, (111), 35 states have call predecessors, (111), 33 states have return successors, (110), 104 states have call predecessors, (110), 110 states have call successors, (110) [2022-12-14 10:14:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 834 transitions. [2022-12-14 10:14:40,363 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 834 transitions. Word has length 80 [2022-12-14 10:14:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:14:40,363 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 834 transitions. [2022-12-14 10:14:40,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 10:14:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 834 transitions. [2022-12-14 10:14:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 10:14:40,365 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:14:40,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:14:40,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 10:14:40,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 10:14:40,566 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:14:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:14:40,567 INFO L85 PathProgramCache]: Analyzing trace with hash 340788777, now seen corresponding path program 1 times [2022-12-14 10:14:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:14:40,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11443202] [2022-12-14 10:14:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:14:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:40,649 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 10:14:40,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:14:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11443202] [2022-12-14 10:14:40,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11443202] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:14:40,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668956024] [2022-12-14 10:14:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:14:40,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:14:40,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:14:40,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:14:40,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:14:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:14:40,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:14:40,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:14:40,882 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 10:14:40,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:14:40,930 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 10:14:40,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668956024] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:14:40,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1201435531] [2022-12-14 10:14:40,934 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 10:14:40,934 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:14:40,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:14:40,935 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:14:40,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:15:25,617 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:15:25,942 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 10:15:26,252 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2022-12-14 10:16:04,029 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-12-14 10:16:04,346 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 481 for LOIs [2022-12-14 10:16:26,037 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-12-14 10:16:26,328 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-12-14 10:16:26,401 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2022-12-14 10:16:26,448 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-12-14 10:16:27,117 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:17:15,845 WARN L233 SmtUtils]: Spent 13.26s on a formula simplification. DAG size of input: 603 DAG size of output: 477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:17:29,738 WARN L233 SmtUtils]: Spent 13.58s on a formula simplification. DAG size of input: 605 DAG size of output: 480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:17:36,426 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 604 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:17:44,044 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 602 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:18:20,704 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 547 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:19:16,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1201435531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:16,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:19:16,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-12-14 10:19:16,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434322033] [2022-12-14 10:19:16,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:16,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-14 10:19:16,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-14 10:19:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3492, Unknown=0, NotChecked=0, Total=3660 [2022-12-14 10:19:16,558 INFO L87 Difference]: Start difference. First operand 554 states and 834 transitions. Second operand has 56 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 37 states have internal predecessors, (45), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 10:19:23,976 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 589 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:19:29,407 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 591 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:19:34,853 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 611 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:20:05,263 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 606 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:20:17,839 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 612 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:20:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:20:56,583 INFO L93 Difference]: Finished difference Result 1012 states and 1551 transitions. [2022-12-14 10:20:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-14 10:20:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 37 states have internal predecessors, (45), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 79 [2022-12-14 10:20:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:20:56,586 INFO L225 Difference]: With dead ends: 1012 [2022-12-14 10:20:56,586 INFO L226 Difference]: Without dead ends: 697 [2022-12-14 10:20:56,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 244.9s TimeCoverageRelationStatistics Valid=506, Invalid=6634, Unknown=0, NotChecked=0, Total=7140 [2022-12-14 10:20:56,588 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 258 mSDsluCounter, 7233 mSDsCounter, 0 mSdLazyCounter, 7858 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 7495 SdHoareTripleChecker+Invalid, 7882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 7858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:20:56,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 7495 Invalid, 7882 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [24 Valid, 7858 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time] [2022-12-14 10:20:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-12-14 10:20:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 574. [2022-12-14 10:20:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 429 states have (on average 1.5011655011655012) internal successors, (644), 436 states have internal predecessors, (644), 111 states have call successors, (111), 35 states have call predecessors, (111), 33 states have return successors, (110), 104 states have call predecessors, (110), 110 states have call successors, (110) [2022-12-14 10:20:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 865 transitions. [2022-12-14 10:20:56,980 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 865 transitions. Word has length 79 [2022-12-14 10:20:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:20:56,980 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 865 transitions. [2022-12-14 10:20:56,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 37 states have internal predecessors, (45), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 10:20:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 865 transitions. [2022-12-14 10:20:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 10:20:56,985 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:20:56,985 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:20:56,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:20:57,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:20:57,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:20:57,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:20:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash 270935079, now seen corresponding path program 1 times [2022-12-14 10:20:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:20:57,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599849505] [2022-12-14 10:20:57,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:20:57,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:20:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:20:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 10:20:57,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:20:57,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599849505] [2022-12-14 10:20:57,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599849505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:20:57,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:20:57,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:20:57,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56592004] [2022-12-14 10:20:57,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:20:57,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:20:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:20:57,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:20:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:20:57,360 INFO L87 Difference]: Start difference. First operand 574 states and 865 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 10:20:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:20:57,929 INFO L93 Difference]: Finished difference Result 717 states and 1035 transitions. [2022-12-14 10:20:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:20:57,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 82 [2022-12-14 10:20:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:20:57,931 INFO L225 Difference]: With dead ends: 717 [2022-12-14 10:20:57,932 INFO L226 Difference]: Without dead ends: 604 [2022-12-14 10:20:57,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 10:20:57,933 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 123 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:20:57,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 340 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:20:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-12-14 10:20:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 602. [2022-12-14 10:20:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 443 states have (on average 1.4853273137697518) internal successors, (658), 451 states have internal predecessors, (658), 117 states have call successors, (117), 44 states have call predecessors, (117), 41 states have return successors, (116), 109 states have call predecessors, (116), 116 states have call successors, (116) [2022-12-14 10:20:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 891 transitions. [2022-12-14 10:20:58,345 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 891 transitions. Word has length 82 [2022-12-14 10:20:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:20:58,345 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 891 transitions. [2022-12-14 10:20:58,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 10:20:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 891 transitions. [2022-12-14 10:20:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 10:20:58,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:20:58,347 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:20:58,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:20:58,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:20:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:20:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2112678984, now seen corresponding path program 1 times [2022-12-14 10:20:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:20:58,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360043056] [2022-12-14 10:20:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:20:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:20:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:20:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 10:20:58,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:20:58,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360043056] [2022-12-14 10:20:58,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360043056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:20:58,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:20:58,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:20:58,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605456866] [2022-12-14 10:20:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:20:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:20:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:20:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:20:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:20:58,535 INFO L87 Difference]: Start difference. First operand 602 states and 891 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-14 10:20:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:20:59,414 INFO L93 Difference]: Finished difference Result 802 states and 1128 transitions. [2022-12-14 10:20:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:20:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 135 [2022-12-14 10:20:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:20:59,419 INFO L225 Difference]: With dead ends: 802 [2022-12-14 10:20:59,419 INFO L226 Difference]: Without dead ends: 614 [2022-12-14 10:20:59,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:20:59,420 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 240 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:20:59,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 425 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:20:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-12-14 10:20:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2022-12-14 10:20:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 449 states have (on average 1.4743875278396437) internal successors, (662), 457 states have internal predecessors, (662), 117 states have call successors, (117), 50 states have call predecessors, (117), 47 states have return successors, (116), 109 states have call predecessors, (116), 116 states have call successors, (116) [2022-12-14 10:20:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 895 transitions. [2022-12-14 10:20:59,814 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 895 transitions. Word has length 135 [2022-12-14 10:20:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:20:59,814 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 895 transitions. [2022-12-14 10:20:59,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-14 10:20:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 895 transitions. [2022-12-14 10:20:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-14 10:20:59,816 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:20:59,817 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:59,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:20:59,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:20:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:20:59,817 INFO L85 PathProgramCache]: Analyzing trace with hash -297308155, now seen corresponding path program 1 times [2022-12-14 10:20:59,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:20:59,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381178542] [2022-12-14 10:20:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:20:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:20:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-14 10:21:00,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:00,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381178542] [2022-12-14 10:21:00,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381178542] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:21:00,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606257178] [2022-12-14 10:21:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:00,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:21:00,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:21:00,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:21:00,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccaa8b2-fdcd-4cb4-a97c-3a22c4755e99/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:21:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:00,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:21:00,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:21:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-14 10:21:00,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:21:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 10:21:00,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606257178] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:21:00,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152996921] [2022-12-14 10:21:00,950 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2022-12-14 10:21:00,950 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:21:00,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:21:00,951 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:21:00,951 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs