./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/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_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/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_1a72dfcc-1c34-4e73-b106-320b01262bc2/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 cc83a32f8f5c6143265231752530a7f576faa355052cdad9509cfbce0d0adeb3 --- 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 07:12:16,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:12:16,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:12:16,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:12:16,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:12:16,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:12:16,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:12:16,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:12:16,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:12:16,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:12:16,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:12:16,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:12:16,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:12:16,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:12:16,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:12:16,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:12:16,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:12:16,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:12:16,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:12:16,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:12:16,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:12:16,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:12:16,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:12:16,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:12:16,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:12:16,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:12:16,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:12:16,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:12:16,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:12:16,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:12:16,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:12:16,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:12:16,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:12:16,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:12:16,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:12:16,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:12:16,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:12:16,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:12:16,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:12:16,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:12:16,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:12:16,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:12:16,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:12:16,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:12:16,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:12:16,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:12:16,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:12:16,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:12:16,413 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:12:16,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:12:16,413 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:12:16,413 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:12:16,413 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:12:16,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:12:16,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:12:16,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:12:16,414 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:12:16,414 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:12:16,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:12:16,415 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:12:16,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:12:16,416 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:12:16,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:12:16,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:12:16,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:12:16,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:12:16,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:12:16,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:12:16,417 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:12:16,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:12:16,417 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:12:16,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:12:16,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:12:16,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:12:16,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:12:16,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:12:16,418 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:12:16,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:12:16,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:12:16,419 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:12:16,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:12:16,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:12:16,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:12:16,419 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_1a72dfcc-1c34-4e73-b106-320b01262bc2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc83a32f8f5c6143265231752530a7f576faa355052cdad9509cfbce0d0adeb3 [2022-12-14 07:12:16,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:12:16,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:12:16,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:12:16,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:12:16,658 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:12:16,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product24.cil.c [2022-12-14 07:12:19,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:12:19,471 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:12:19,472 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/sv-benchmarks/c/product-lines/email_spec4_product24.cil.c [2022-12-14 07:12:19,488 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/data/3151f768f/bd03b3496890412c9dd70b71bb35c5cf/FLAG5d05b21d7 [2022-12-14 07:12:19,502 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/data/3151f768f/bd03b3496890412c9dd70b71bb35c5cf [2022-12-14 07:12:19,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:12:19,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:12:19,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:12:19,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:12:19,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:12:19,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:12:19" (1/1) ... [2022-12-14 07:12:19,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecfd123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:19, skipping insertion in model container [2022-12-14 07:12:19,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:12:19" (1/1) ... [2022-12-14 07:12:19,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:12:19,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:12:19,799 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_1a72dfcc-1c34-4e73-b106-320b01262bc2/sv-benchmarks/c/product-lines/email_spec4_product24.cil.c[33676,33689] [2022-12-14 07:12:19,890 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,891 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,894 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,899 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,922 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,924 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,932 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,933 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:19,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:12:19,946 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:12:19,981 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_1a72dfcc-1c34-4e73-b106-320b01262bc2/sv-benchmarks/c/product-lines/email_spec4_product24.cil.c[33676,33689] [2022-12-14 07:12:20,000 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,001 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,002 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,005 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,008 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,009 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,012 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,013 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:12:20,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:12:20,047 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:12:20,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20 WrapperNode [2022-12-14 07:12:20,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:12:20,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:12:20,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:12:20,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:12:20,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,105 INFO L138 Inliner]: procedures = 130, calls = 209, calls flagged for inlining = 63, calls inlined = 58, statements flattened = 1034 [2022-12-14 07:12:20,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:12:20,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:12:20,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:12:20,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:12:20,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:12:20,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:12:20,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:12:20,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:12:20,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (1/1) ... [2022-12-14 07:12:20,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:12:20,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:12:20,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:12:20,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:12:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 07:12:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 07:12:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 07:12:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 07:12:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 07:12:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 07:12:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 07:12:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 07:12:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 07:12:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 07:12:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 07:12:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 07:12:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 07:12:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 07:12:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 07:12:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 07:12:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 07:12:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 07:12:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 07:12:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 07:12:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 07:12:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:12:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 07:12:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 07:12:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 07:12:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 07:12:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 07:12:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 07:12:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 07:12:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 07:12:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 07:12:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 07:12:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 07:12:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 07:12:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 07:12:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 07:12:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:12:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 07:12:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 07:12:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:12:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:12:20,351 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:12:20,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:12:20,892 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:12:21,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:12:21,128 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:12:21,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:12:21 BoogieIcfgContainer [2022-12-14 07:12:21,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:12:21,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:12:21,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:12:21,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:12:21,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:12:19" (1/3) ... [2022-12-14 07:12:21,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169eaf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:12:21, skipping insertion in model container [2022-12-14 07:12:21,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:12:20" (2/3) ... [2022-12-14 07:12:21,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169eaf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:12:21, skipping insertion in model container [2022-12-14 07:12:21,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:12:21" (3/3) ... [2022-12-14 07:12:21,136 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product24.cil.c [2022-12-14 07:12:21,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:12:21,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:12:21,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:12:21,193 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;@80593, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:12:21,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:12:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 100 states have (on average 1.34) internal successors, (134), 102 states have internal predecessors, (134), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-14 07:12:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 07:12:21,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:12:21,209 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] [2022-12-14 07:12:21,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:12:21,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:12:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1886352626, now seen corresponding path program 1 times [2022-12-14 07:12:21,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:12:21,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721116242] [2022-12-14 07:12:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:12:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:12:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:12:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:12:21,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:12:21,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721116242] [2022-12-14 07:12:21,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721116242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:12:21,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:12:21,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:12:21,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479545762] [2022-12-14 07:12:21,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:12:21,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:12:21,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:12:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:12:21,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:12:21,480 INFO L87 Difference]: Start difference. First operand has 168 states, 100 states have (on average 1.34) internal successors, (134), 102 states have internal predecessors, (134), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:12:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:12:21,601 INFO L93 Difference]: Finished difference Result 253 states and 338 transitions. [2022-12-14 07:12:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:12:21,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 58 [2022-12-14 07:12:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:12:21,613 INFO L225 Difference]: With dead ends: 253 [2022-12-14 07:12:21,613 INFO L226 Difference]: Without dead ends: 165 [2022-12-14 07:12:21,617 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 07:12:21,620 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:12:21,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:12:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-14 07:12:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-12-14 07:12:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 99 states have internal predecessors, (128), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 07:12:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 223 transitions. [2022-12-14 07:12:21,671 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 223 transitions. Word has length 58 [2022-12-14 07:12:21,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:12:21,672 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 223 transitions. [2022-12-14 07:12:21,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:12:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 223 transitions. [2022-12-14 07:12:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 07:12:21,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:12:21,676 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] [2022-12-14 07:12:21,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:12:21,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:12:21,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:12:21,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1728509436, now seen corresponding path program 1 times [2022-12-14 07:12:21,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:12:21,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519083782] [2022-12-14 07:12:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:12:21,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:12:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:12:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:12:21,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:12:21,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519083782] [2022-12-14 07:12:21,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519083782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:12:21,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:12:21,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:12:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164760858] [2022-12-14 07:12:21,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:12:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:12:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:12:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:12:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:12:21,873 INFO L87 Difference]: Start difference. First operand 165 states and 223 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:12:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:12:21,974 INFO L93 Difference]: Finished difference Result 249 states and 326 transitions. [2022-12-14 07:12:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:12:21,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2022-12-14 07:12:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:12:21,976 INFO L225 Difference]: With dead ends: 249 [2022-12-14 07:12:21,977 INFO L226 Difference]: Without dead ends: 167 [2022-12-14 07:12:21,978 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 07:12:21,979 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:12:21,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:12:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-12-14 07:12:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-12-14 07:12:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 100 states have (on average 1.3) internal successors, (130), 101 states have internal predecessors, (130), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 07:12:22,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2022-12-14 07:12:22,004 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 59 [2022-12-14 07:12:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:12:22,005 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2022-12-14 07:12:22,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:12:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2022-12-14 07:12:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 07:12:22,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:12:22,008 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:12:22,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:12:22,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:12:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:12:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1567382613, now seen corresponding path program 1 times [2022-12-14 07:12:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:12:22,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632848068] [2022-12-14 07:12:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:12:22,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:12:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:12:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:12:22,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:12:22,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632848068] [2022-12-14 07:12:22,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632848068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:12:22,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:12:22,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:12:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166759495] [2022-12-14 07:12:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:12:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:12:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:12:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:12:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:12:22,145 INFO L87 Difference]: Start difference. First operand 167 states and 225 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:12:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:12:22,241 INFO L93 Difference]: Finished difference Result 364 states and 509 transitions. [2022-12-14 07:12:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:12:22,242 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2022-12-14 07:12:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:12:22,244 INFO L225 Difference]: With dead ends: 364 [2022-12-14 07:12:22,244 INFO L226 Difference]: Without dead ends: 215 [2022-12-14 07:12:22,246 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 07:12:22,247 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 57 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 398 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 07:12:22,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 398 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:12:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-12-14 07:12:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 210. [2022-12-14 07:12:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 133 states have internal predecessors, (183), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-12-14 07:12:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 300 transitions. [2022-12-14 07:12:22,268 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 300 transitions. Word has length 64 [2022-12-14 07:12:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:12:22,269 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 300 transitions. [2022-12-14 07:12:22,269 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:12:22,269 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 300 transitions. [2022-12-14 07:12:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:12:22,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:12:22,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:12:22,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:12:22,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:12:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:12:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1587553057, now seen corresponding path program 1 times [2022-12-14 07:12:22,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:12:22,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176407924] [2022-12-14 07:12:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:12:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:12:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:12:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:12:22,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:12:22,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176407924] [2022-12-14 07:12:22,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176407924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:12:22,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116621071] [2022-12-14 07:12:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:12:22,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:12:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:12:22,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:12:22,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:12:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:12:22,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:12:22,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:12:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:12:22,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:12:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:12:22,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116621071] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:12:22,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1452584931] [2022-12-14 07:12:22,774 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 07:12:22,775 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:12:22,778 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:12:22,784 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:12:22,784 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:12:54,443 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:12:54,736 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:12:55,024 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 07:12:56,623 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 07:12:56,660 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-12-14 07:13:11,784 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 450 for LOIs [2022-12-14 07:13:12,362 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 249 for LOIs [2022-12-14 07:13:12,468 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2022-12-14 07:13:12,506 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:14:16,831 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 450 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:14:24,461 WARN L233 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 476 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:14:45,333 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2895#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing_getClientId_~retValue_acc~16#1| 2147483647) (= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_email_isEncrypted1~0 0) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~client#1|) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 1 |outgoing_mail_#in~client#1|) (<= |outgoing_mail_#in~msg#1| 1) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~9#1| 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 1 |outgoing_sign_~client#1|) (<= 1 |outgoing_mail_~msg#1|) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 1) (= ~__ste_client_name2~0.offset 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_client_name1~0.base 0) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_client_autoResponse1~0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= |outgoing_sign_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ |outgoing_sign_~privkey~0#1| 2147483648)) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= 0 (+ |outgoing_getClientId_~retValue_acc~16#1| 2147483648)) (<= |outgoing_sign_~privkey~0#1| 2147483647) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~client#1|) (<= |outgoing_sign_~client#1| 1) (= ~__ste_ClientKeyring_size1~0 0) (= |old(~__ste_email_signKey0~0)| 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing_getClientId_#res#1| 2147483647) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 1) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= |outgoing_#in~msg#1| 1) (<= |outgoing_sign_~tmp~20#1| 2147483647) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= |old(~queue_empty~0)| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= |old(~__ste_email_from0~0)| 0) (<= |outgoing_sign_#in~client#1| 1) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing_getClientId_~handle#1|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (= ~__ste_email_encryptionKey0~0 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1|) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~20#1|)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= |old(~__ste_email_isSigned0~0)| 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__ste_Client_Keyring0_User0~0 0) (<= 1 |outgoing_mail_#in~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~client#1|) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 1) (<= 1 |outgoing_mail_~__utac__ad__arg1~0#1|) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 1 |outgoing_sign_#in~client#1|) (<= |outgoing_getClientId_#in~handle#1| 1) (<= 1 |outgoing_sign_~msg#1|) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 1) (= |old(~__ste_email_signKey1~0)| 0) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_mail_~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= |old(~queued_message~0)| 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= |outgoing_mail_~msg#1| 1) (= |old(~queued_client~0)| 0) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~3#1| 1) (= ~__ste_email_subject1~0.base 0) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing_mail_#in~client#1| 1) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_sign_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing_#in~client#1| 1) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483647) (= ~__ste_Client_AddressBook0_Alias2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 1) (= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_email_isEncrypted0~0 0) (<= |outgoing_~msg#1| 1) (<= |outgoing_outgoing__wrappee__AutoResponder_~client#1| 1) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483648)) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 1) (= |old(~__ste_email_isSigned1~0)| 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 1 |outgoing_getClientId_#in~handle#1|) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |outgoing_getClientId_~handle#1| 1) (<= 1 |outgoing_sign_#in~msg#1|) (<= 1 |outgoing_#in~client#1|) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~msg#1|) (<= |outgoing_~client#1| 1) (<= 1 |outgoing_mail_~__utac__ad__arg2~0#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing_mail_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |outgoing___utac_acc__SignForward_spec__1_~tmp___0~3#1|) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 07:14:45,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:14:45,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:14:45,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 07:14:45,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409667967] [2022-12-14 07:14:45,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:14:45,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:14:45,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:45,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:14:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2408, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 07:14:45,336 INFO L87 Difference]: Start difference. First operand 210 states and 300 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 07:14:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:45,536 INFO L93 Difference]: Finished difference Result 542 states and 828 transitions. [2022-12-14 07:14:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:14:45,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 65 [2022-12-14 07:14:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:45,540 INFO L225 Difference]: With dead ends: 542 [2022-12-14 07:14:45,540 INFO L226 Difference]: Without dead ends: 460 [2022-12-14 07:14:45,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 92.8s TimeCoverageRelationStatistics Valid=142, Invalid=2408, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 07:14:45,543 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 213 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:45,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 752 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:14:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-12-14 07:14:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2022-12-14 07:14:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 303 states have (on average 1.5148514851485149) internal successors, (459), 304 states have internal predecessors, (459), 123 states have call successors, (123), 18 states have call predecessors, (123), 18 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-12-14 07:14:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 704 transitions. [2022-12-14 07:14:45,571 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 704 transitions. Word has length 65 [2022-12-14 07:14:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:45,571 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 704 transitions. [2022-12-14 07:14:45,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 07:14:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 704 transitions. [2022-12-14 07:14:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 07:14:45,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:45,575 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 07:14:45,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:14:45,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:14:45,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1277065602, now seen corresponding path program 1 times [2022-12-14 07:14:45,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:45,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950931397] [2022-12-14 07:14:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:45,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:45,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:45,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950931397] [2022-12-14 07:14:45,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950931397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:45,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:45,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:45,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413032118] [2022-12-14 07:14:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:45,872 INFO L87 Difference]: Start difference. First operand 445 states and 704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:45,976 INFO L93 Difference]: Finished difference Result 1095 states and 1766 transitions. [2022-12-14 07:14:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:45,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 71 [2022-12-14 07:14:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:45,979 INFO L225 Difference]: With dead ends: 1095 [2022-12-14 07:14:45,979 INFO L226 Difference]: Without dead ends: 682 [2022-12-14 07:14:45,980 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 07:14:45,981 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 55 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 399 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 07:14:45,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 399 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-12-14 07:14:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 677. [2022-12-14 07:14:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 471 states have (on average 1.5329087048832273) internal successors, (722), 472 states have internal predecessors, (722), 187 states have call successors, (187), 18 states have call predecessors, (187), 18 states have return successors, (186), 186 states have call predecessors, (186), 186 states have call successors, (186) [2022-12-14 07:14:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1095 transitions. [2022-12-14 07:14:46,008 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1095 transitions. Word has length 71 [2022-12-14 07:14:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:46,009 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1095 transitions. [2022-12-14 07:14:46,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1095 transitions. [2022-12-14 07:14:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 07:14:46,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:46,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:14:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:14:46,012 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1411576139, now seen corresponding path program 1 times [2022-12-14 07:14:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:46,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848061894] [2022-12-14 07:14:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:46,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:46,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848061894] [2022-12-14 07:14:46,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848061894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:46,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:46,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119198960] [2022-12-14 07:14:46,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:46,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:46,064 INFO L87 Difference]: Start difference. First operand 677 states and 1095 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:46,178 INFO L93 Difference]: Finished difference Result 1652 states and 2709 transitions. [2022-12-14 07:14:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:46,179 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2022-12-14 07:14:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:46,184 INFO L225 Difference]: With dead ends: 1652 [2022-12-14 07:14:46,185 INFO L226 Difference]: Without dead ends: 1037 [2022-12-14 07:14:46,187 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 07:14:46,188 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 53 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:46,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 391 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-12-14 07:14:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1032. [2022-12-14 07:14:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 731 states have (on average 1.5403556771545828) internal successors, (1126), 732 states have internal predecessors, (1126), 282 states have call successors, (282), 18 states have call predecessors, (282), 18 states have return successors, (281), 281 states have call predecessors, (281), 281 states have call successors, (281) [2022-12-14 07:14:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1689 transitions. [2022-12-14 07:14:46,255 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1689 transitions. Word has length 72 [2022-12-14 07:14:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:46,255 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1689 transitions. [2022-12-14 07:14:46,256 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1689 transitions. [2022-12-14 07:14:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 07:14:46,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:46,261 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] [2022-12-14 07:14:46,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:14:46,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1579682284, now seen corresponding path program 1 times [2022-12-14 07:14:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:46,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971761855] [2022-12-14 07:14:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:46,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:46,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:46,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971761855] [2022-12-14 07:14:46,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971761855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:46,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:46,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203653783] [2022-12-14 07:14:46,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:46,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:46,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:46,333 INFO L87 Difference]: Start difference. First operand 1032 states and 1689 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:46,452 INFO L93 Difference]: Finished difference Result 2450 states and 4053 transitions. [2022-12-14 07:14:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:46,452 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 73 [2022-12-14 07:14:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:46,458 INFO L225 Difference]: With dead ends: 2450 [2022-12-14 07:14:46,458 INFO L226 Difference]: Without dead ends: 1560 [2022-12-14 07:14:46,460 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 07:14:46,460 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 51 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:46,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 384 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2022-12-14 07:14:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1555. [2022-12-14 07:14:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1131 states have (on average 1.5455349248452697) internal successors, (1748), 1132 states have internal predecessors, (1748), 405 states have call successors, (405), 18 states have call predecessors, (405), 18 states have return successors, (404), 404 states have call predecessors, (404), 404 states have call successors, (404) [2022-12-14 07:14:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2557 transitions. [2022-12-14 07:14:46,528 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2557 transitions. Word has length 73 [2022-12-14 07:14:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:46,528 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 2557 transitions. [2022-12-14 07:14:46,529 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2557 transitions. [2022-12-14 07:14:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 07:14:46,532 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:46,532 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:14:46,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:14:46,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1502179636, now seen corresponding path program 1 times [2022-12-14 07:14:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:46,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343864084] [2022-12-14 07:14:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:46,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:46,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343864084] [2022-12-14 07:14:46,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343864084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:46,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:46,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780692410] [2022-12-14 07:14:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:46,575 INFO L87 Difference]: Start difference. First operand 1555 states and 2557 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:46,731 INFO L93 Difference]: Finished difference Result 3660 states and 6081 transitions. [2022-12-14 07:14:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2022-12-14 07:14:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:46,739 INFO L225 Difference]: With dead ends: 3660 [2022-12-14 07:14:46,739 INFO L226 Difference]: Without dead ends: 2384 [2022-12-14 07:14:46,742 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 07:14:46,743 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 49 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:46,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 384 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-12-14 07:14:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2379. [2022-12-14 07:14:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 1776 states have (on average 1.5484234234234233) internal successors, (2750), 1777 states have internal predecessors, (2750), 584 states have call successors, (584), 18 states have call predecessors, (584), 18 states have return successors, (583), 583 states have call predecessors, (583), 583 states have call successors, (583) [2022-12-14 07:14:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3917 transitions. [2022-12-14 07:14:46,862 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3917 transitions. Word has length 74 [2022-12-14 07:14:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:46,863 INFO L495 AbstractCegarLoop]: Abstraction has 2379 states and 3917 transitions. [2022-12-14 07:14:46,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3917 transitions. [2022-12-14 07:14:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 07:14:46,869 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:46,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:14:46,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:14:46,870 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:46,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:46,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2035630328, now seen corresponding path program 1 times [2022-12-14 07:14:46,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:46,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817102201] [2022-12-14 07:14:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:46,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:46,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:46,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817102201] [2022-12-14 07:14:46,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817102201] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:46,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:46,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:46,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764111504] [2022-12-14 07:14:46,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:46,939 INFO L87 Difference]: Start difference. First operand 2379 states and 3917 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:47,194 INFO L93 Difference]: Finished difference Result 5871 states and 9753 transitions. [2022-12-14 07:14:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 75 [2022-12-14 07:14:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:47,216 INFO L225 Difference]: With dead ends: 5871 [2022-12-14 07:14:47,216 INFO L226 Difference]: Without dead ends: 3914 [2022-12-14 07:14:47,222 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 07:14:47,223 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 47 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 399 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 07:14:47,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 399 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2022-12-14 07:14:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3909. [2022-12-14 07:14:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 2930 states have (on average 1.5375426621160408) internal successors, (4505), 2931 states have internal predecessors, (4505), 960 states have call successors, (960), 18 states have call predecessors, (960), 18 states have return successors, (959), 959 states have call predecessors, (959), 959 states have call successors, (959) [2022-12-14 07:14:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 6424 transitions. [2022-12-14 07:14:47,469 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 6424 transitions. Word has length 75 [2022-12-14 07:14:47,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:47,469 INFO L495 AbstractCegarLoop]: Abstraction has 3909 states and 6424 transitions. [2022-12-14 07:14:47,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 6424 transitions. [2022-12-14 07:14:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 07:14:47,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:47,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:14:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:14:47,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash 424995248, now seen corresponding path program 1 times [2022-12-14 07:14:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:47,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168963566] [2022-12-14 07:14:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:47,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:47,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168963566] [2022-12-14 07:14:47,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168963566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:47,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:47,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548779618] [2022-12-14 07:14:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:47,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:47,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:47,528 INFO L87 Difference]: Start difference. First operand 3909 states and 6424 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:47,875 INFO L93 Difference]: Finished difference Result 9732 states and 16150 transitions. [2022-12-14 07:14:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:47,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2022-12-14 07:14:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:47,910 INFO L225 Difference]: With dead ends: 9732 [2022-12-14 07:14:47,910 INFO L226 Difference]: Without dead ends: 6511 [2022-12-14 07:14:47,920 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 07:14:47,921 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 45 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:47,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 389 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2022-12-14 07:14:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6506. [2022-12-14 07:14:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6506 states, 4921 states have (on average 1.5334281650071124) internal successors, (7546), 4922 states have internal predecessors, (7546), 1566 states have call successors, (1566), 18 states have call predecessors, (1566), 18 states have return successors, (1565), 1565 states have call predecessors, (1565), 1565 states have call successors, (1565) [2022-12-14 07:14:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 10677 transitions. [2022-12-14 07:14:48,282 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 10677 transitions. Word has length 76 [2022-12-14 07:14:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:48,282 INFO L495 AbstractCegarLoop]: Abstraction has 6506 states and 10677 transitions. [2022-12-14 07:14:48,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 10677 transitions. [2022-12-14 07:14:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 07:14:48,289 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:48,289 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] [2022-12-14 07:14:48,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:14:48,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:48,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1378724650, now seen corresponding path program 1 times [2022-12-14 07:14:48,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:48,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187761847] [2022-12-14 07:14:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:48,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:48,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187761847] [2022-12-14 07:14:48,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187761847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:48,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:48,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046844070] [2022-12-14 07:14:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:48,335 INFO L87 Difference]: Start difference. First operand 6506 states and 10677 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:48,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:48,912 INFO L93 Difference]: Finished difference Result 16984 states and 28068 transitions. [2022-12-14 07:14:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:48,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2022-12-14 07:14:48,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:48,958 INFO L225 Difference]: With dead ends: 16984 [2022-12-14 07:14:48,958 INFO L226 Difference]: Without dead ends: 11455 [2022-12-14 07:14:48,972 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 07:14:48,972 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 43 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:48,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 401 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11455 states. [2022-12-14 07:14:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11455 to 11450. [2022-12-14 07:14:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11450 states, 8662 states have (on average 1.5200877395520664) internal successors, (13167), 8663 states have internal predecessors, (13167), 2769 states have call successors, (2769), 18 states have call predecessors, (2769), 18 states have return successors, (2768), 2768 states have call predecessors, (2768), 2768 states have call successors, (2768) [2022-12-14 07:14:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11450 states to 11450 states and 18704 transitions. [2022-12-14 07:14:49,530 INFO L78 Accepts]: Start accepts. Automaton has 11450 states and 18704 transitions. Word has length 77 [2022-12-14 07:14:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:49,530 INFO L495 AbstractCegarLoop]: Abstraction has 11450 states and 18704 transitions. [2022-12-14 07:14:49,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 11450 states and 18704 transitions. [2022-12-14 07:14:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 07:14:49,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:49,539 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] [2022-12-14 07:14:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 07:14:49,539 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2053681233, now seen corresponding path program 1 times [2022-12-14 07:14:49,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:49,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784235203] [2022-12-14 07:14:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:49,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:49,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:49,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784235203] [2022-12-14 07:14:49,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784235203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:49,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:49,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:49,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259587006] [2022-12-14 07:14:49,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:49,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:49,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:49,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:49,586 INFO L87 Difference]: Start difference. First operand 11450 states and 18704 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:50,570 INFO L93 Difference]: Finished difference Result 30303 states and 49834 transitions. [2022-12-14 07:14:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2022-12-14 07:14:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:50,624 INFO L225 Difference]: With dead ends: 30303 [2022-12-14 07:14:50,624 INFO L226 Difference]: Without dead ends: 20282 [2022-12-14 07:14:50,645 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 07:14:50,645 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 41 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:50,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 389 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20282 states. [2022-12-14 07:14:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20282 to 20277. [2022-12-14 07:14:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20277 states, 15450 states have (on average 1.5123624595469256) internal successors, (23366), 15451 states have internal predecessors, (23366), 4808 states have call successors, (4808), 18 states have call predecessors, (4808), 18 states have return successors, (4807), 4807 states have call predecessors, (4807), 4807 states have call successors, (4807) [2022-12-14 07:14:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20277 states to 20277 states and 32981 transitions. [2022-12-14 07:14:51,584 INFO L78 Accepts]: Start accepts. Automaton has 20277 states and 32981 transitions. Word has length 78 [2022-12-14 07:14:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:51,584 INFO L495 AbstractCegarLoop]: Abstraction has 20277 states and 32981 transitions. [2022-12-14 07:14:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 20277 states and 32981 transitions. [2022-12-14 07:14:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 07:14:51,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:51,593 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 07:14:51,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 07:14:51,594 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:51,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:51,594 INFO L85 PathProgramCache]: Analyzing trace with hash -81430248, now seen corresponding path program 1 times [2022-12-14 07:14:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:51,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993821402] [2022-12-14 07:14:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:51,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:51,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:51,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993821402] [2022-12-14 07:14:51,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993821402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:51,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:51,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600533809] [2022-12-14 07:14:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:51,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:51,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:51,638 INFO L87 Difference]: Start difference. First operand 20277 states and 32981 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:53,430 INFO L93 Difference]: Finished difference Result 55015 states and 89926 transitions. [2022-12-14 07:14:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2022-12-14 07:14:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:53,569 INFO L225 Difference]: With dead ends: 55015 [2022-12-14 07:14:53,569 INFO L226 Difference]: Without dead ends: 36722 [2022-12-14 07:14:53,601 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 07:14:53,601 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 39 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:53,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 389 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36722 states. [2022-12-14 07:14:55,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36722 to 36717. [2022-12-14 07:14:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36717 states, 28175 states have (on average 1.5016858917480036) internal successors, (42310), 28176 states have internal predecessors, (42310), 8523 states have call successors, (8523), 18 states have call predecessors, (8523), 18 states have return successors, (8522), 8522 states have call predecessors, (8522), 8522 states have call successors, (8522) [2022-12-14 07:14:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36717 states to 36717 states and 59355 transitions. [2022-12-14 07:14:55,435 INFO L78 Accepts]: Start accepts. Automaton has 36717 states and 59355 transitions. Word has length 79 [2022-12-14 07:14:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:55,435 INFO L495 AbstractCegarLoop]: Abstraction has 36717 states and 59355 transitions. [2022-12-14 07:14:55,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 36717 states and 59355 transitions. [2022-12-14 07:14:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 07:14:55,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:55,448 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 07:14:55,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 07:14:55,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:55,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash -925864047, now seen corresponding path program 1 times [2022-12-14 07:14:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:55,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662651870] [2022-12-14 07:14:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:14:55,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:55,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662651870] [2022-12-14 07:14:55,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662651870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:14:55,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:14:55,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:14:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063023400] [2022-12-14 07:14:55,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:14:55,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:14:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:14:55,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:14:55,532 INFO L87 Difference]: Start difference. First operand 36717 states and 59355 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:14:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:58,566 INFO L93 Difference]: Finished difference Result 67632 states and 109507 transitions. [2022-12-14 07:14:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:14:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2022-12-14 07:14:58,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:58,738 INFO L225 Difference]: With dead ends: 67632 [2022-12-14 07:14:58,738 INFO L226 Difference]: Without dead ends: 67550 [2022-12-14 07:14:58,754 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 07:14:58,754 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 37 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:58,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 389 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:14:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67550 states. [2022-12-14 07:15:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67550 to 67545. [2022-12-14 07:15:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67545 states, 52204 states have (on average 1.4877404030342503) internal successors, (77666), 52205 states have internal predecessors, (77666), 15322 states have call successors, (15322), 18 states have call predecessors, (15322), 18 states have return successors, (15321), 15321 states have call predecessors, (15321), 15321 states have call successors, (15321) [2022-12-14 07:15:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67545 states to 67545 states and 108309 transitions. [2022-12-14 07:15:02,183 INFO L78 Accepts]: Start accepts. Automaton has 67545 states and 108309 transitions. Word has length 80 [2022-12-14 07:15:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:02,184 INFO L495 AbstractCegarLoop]: Abstraction has 67545 states and 108309 transitions. [2022-12-14 07:15:02,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:15:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 67545 states and 108309 transitions. [2022-12-14 07:15:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 07:15:02,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:02,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:02,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 07:15:02,197 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:15:02,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:02,198 INFO L85 PathProgramCache]: Analyzing trace with hash 691476983, now seen corresponding path program 1 times [2022-12-14 07:15:02,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:02,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809883320] [2022-12-14 07:15:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:02,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:15:03,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:03,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809883320] [2022-12-14 07:15:03,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809883320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:03,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:03,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-14 07:15:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998861386] [2022-12-14 07:15:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:03,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 07:15:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 07:15:03,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-12-14 07:15:03,119 INFO L87 Difference]: Start difference. First operand 67545 states and 108309 transitions. Second operand has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 07:15:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:07,409 INFO L93 Difference]: Finished difference Result 67681 states and 108505 transitions. [2022-12-14 07:15:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:15:07,410 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 81 [2022-12-14 07:15:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:07,605 INFO L225 Difference]: With dead ends: 67681 [2022-12-14 07:15:07,605 INFO L226 Difference]: Without dead ends: 67601 [2022-12-14 07:15:07,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-12-14 07:15:07,632 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 359 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:07,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 2199 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 07:15:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67601 states. [2022-12-14 07:15:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67601 to 67562. [2022-12-14 07:15:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67562 states, 52214 states have (on average 1.4876278392768223) internal successors, (77675), 52214 states have internal predecessors, (77675), 15326 states have call successors, (15326), 22 states have call predecessors, (15326), 21 states have return successors, (15325), 15325 states have call predecessors, (15325), 15325 states have call successors, (15325) [2022-12-14 07:15:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67562 states to 67562 states and 108326 transitions. [2022-12-14 07:15:11,601 INFO L78 Accepts]: Start accepts. Automaton has 67562 states and 108326 transitions. Word has length 81 [2022-12-14 07:15:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:11,602 INFO L495 AbstractCegarLoop]: Abstraction has 67562 states and 108326 transitions. [2022-12-14 07:15:11,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 07:15:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 67562 states and 108326 transitions. [2022-12-14 07:15:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 07:15:11,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:11,656 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-12-14 07:15:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 07:15:11,656 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:15:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -774133314, now seen corresponding path program 1 times [2022-12-14 07:15:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:11,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899330229] [2022-12-14 07:15:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:15:11,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:11,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899330229] [2022-12-14 07:15:11,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899330229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:11,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:11,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:15:11,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262647040] [2022-12-14 07:15:11,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:11,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:15:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:11,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:15:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:15:11,809 INFO L87 Difference]: Start difference. First operand 67562 states and 108326 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 07:15:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:15,498 INFO L93 Difference]: Finished difference Result 67623 states and 108393 transitions. [2022-12-14 07:15:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:15:15,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 116 [2022-12-14 07:15:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:15,680 INFO L225 Difference]: With dead ends: 67623 [2022-12-14 07:15:15,680 INFO L226 Difference]: Without dead ends: 67562 [2022-12-14 07:15:15,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:15:15,701 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 92 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:15,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 821 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:15:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67562 states. [2022-12-14 07:15:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67562 to 67562. [2022-12-14 07:15:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67562 states, 52214 states have (on average 1.4876086873252385) internal successors, (77674), 52214 states have internal predecessors, (77674), 15326 states have call successors, (15326), 22 states have call predecessors, (15326), 21 states have return successors, (15325), 15325 states have call predecessors, (15325), 15325 states have call successors, (15325) [2022-12-14 07:15:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67562 states to 67562 states and 108325 transitions. [2022-12-14 07:15:19,833 INFO L78 Accepts]: Start accepts. Automaton has 67562 states and 108325 transitions. Word has length 116 [2022-12-14 07:15:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:19,833 INFO L495 AbstractCegarLoop]: Abstraction has 67562 states and 108325 transitions. [2022-12-14 07:15:19,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 07:15:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 67562 states and 108325 transitions. [2022-12-14 07:15:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 07:15:19,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:19,882 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-12-14 07:15:19,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 07:15:19,882 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:15:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:19,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1764038119, now seen corresponding path program 1 times [2022-12-14 07:15:19,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:19,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815972628] [2022-12-14 07:15:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 07:15:20,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:20,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815972628] [2022-12-14 07:15:20,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815972628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:20,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:20,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:15:20,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090215954] [2022-12-14 07:15:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:20,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:15:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:15:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:15:20,061 INFO L87 Difference]: Start difference. First operand 67562 states and 108325 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 07:15:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:23,792 INFO L93 Difference]: Finished difference Result 67620 states and 108383 transitions. [2022-12-14 07:15:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:15:23,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 121 [2022-12-14 07:15:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:23,974 INFO L225 Difference]: With dead ends: 67620 [2022-12-14 07:15:23,974 INFO L226 Difference]: Without dead ends: 67594 [2022-12-14 07:15:23,999 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 07:15:23,999 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 155 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:24,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 387 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:15:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2022-12-14 07:15:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 67591. [2022-12-14 07:15:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67591 states, 52229 states have (on average 1.4874686476861514) internal successors, (77689), 52230 states have internal predecessors, (77689), 15332 states have call successors, (15332), 30 states have call predecessors, (15332), 29 states have return successors, (15331), 15330 states have call predecessors, (15331), 15331 states have call successors, (15331) [2022-12-14 07:15:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67591 states to 67591 states and 108352 transitions. [2022-12-14 07:15:28,462 INFO L78 Accepts]: Start accepts. Automaton has 67591 states and 108352 transitions. Word has length 121 [2022-12-14 07:15:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:28,462 INFO L495 AbstractCegarLoop]: Abstraction has 67591 states and 108352 transitions. [2022-12-14 07:15:28,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 07:15:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 67591 states and 108352 transitions. [2022-12-14 07:15:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 07:15:28,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:28,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-12-14 07:15:28,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 07:15:28,535 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:15:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash -318477419, now seen corresponding path program 1 times [2022-12-14 07:15:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:28,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588534012] [2022-12-14 07:15:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:28,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:15:30,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:30,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588534012] [2022-12-14 07:15:30,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588534012] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:30,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080723017] [2022-12-14 07:15:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:30,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:30,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:30,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:15:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:30,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-14 07:15:30,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 07:15:32,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 07:15:36,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080723017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:15:36,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [425485093] [2022-12-14 07:15:36,567 INFO L159 IcfgInterpreter]: Started Sifa with 103 locations of interest [2022-12-14 07:15:36,567 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:36,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:36,568 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:36,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:16:22,770 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 07:16:23,051 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-12-14 07:16:25,529 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:16:25,807 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 522 for LOIs [2022-12-14 07:17:04,179 INFO L197 IcfgInterpreter]: Interpreting procedure queue with input of size 418 for LOIs [2022-12-14 07:17:04,409 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 216 for LOIs [2022-12-14 07:17:04,432 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 216 for LOIs [2022-12-14 07:17:04,463 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 216 for LOIs [2022-12-14 07:17:04,491 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 216 for LOIs [2022-12-14 07:17:04,520 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 472 for LOIs [2022-12-14 07:17:06,257 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 412 for LOIs [2022-12-14 07:17:06,503 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 216 for LOIs [2022-12-14 07:17:06,532 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:19:30,733 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 522 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:19:40,411 WARN L233 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 534 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:20:48,071 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 687 DAG size of output: 557 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:21:01,673 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 690 DAG size of output: 547 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:21:33,130 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1283488#(and (= ~__ste_Client_Keyring1_User2~0 0) (<= |outgoing_sign_#in~msg#1| 2147483647) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing_getClientId_~retValue_acc~16#1| 2147483647) (<= ~queued_message~0 2147483647) (<= 0 (+ |outgoing_~msg#1| 2147483648)) (= ~__ste_email_isEncrypted1~0 0) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~9#1| 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~client#1| 2147483647) (<= |outgoing_mail_#in~client#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 2147483648)) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 2147483648)) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 0 (+ 2147483648 |outgoing___utac_acc__SignForward_spec__1_~msg#1|)) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483648)) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 2147483647) (<= |outgoing_~client#1| 2147483647) (<= ~__ste_client_idCounter2~0 3) (<= 0 (+ |outgoing_sign_~privkey~0#1| 2147483648)) (= ~__ste_email_body1~0.offset 0) (<= 0 (+ |outgoing_getClientId_~handle#1| 2147483648)) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing_sign_~msg#1| 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= 0 (+ |outgoing_getClientId_~retValue_acc~16#1| 2147483648)) (<= |outgoing_sign_~privkey~0#1| 2147483647) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_Client_Keyring0_User2~0 0) (<= |outgoing_getClientId_~handle#1| 2147483647) (= ~__ste_ClientAddressBook_size0~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 2147483647) (<= |old(~queued_client~0)| 2147483647) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483647) (<= |outgoing_getClientId_#res#1| 2147483647) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~3#1| 2147483647) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= |outgoing_sign_~tmp~20#1| 2147483647) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 0 (+ ~queued_client~0 2147483648)) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= 789 ~__ste_client_privateKey2~0) (<= |outgoing_#in~client#1| 2147483647) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~queued_message~0 2147483648)) (<= 0 (+ |outgoing_mail_~msg#1| 2147483648)) (= ~__ste_email_encryptionKey0~0 0) (<= |outgoing_sign_#in~client#1| 2147483647) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~20#1|)) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 (+ |outgoing_mail_#in~msg#1| 2147483648)) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 |old(~queue_empty~0)|) (= ~__SELECTED_FEATURE_Forward~0 0) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 2147483648)) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= 0 (+ |outgoing_~client#1| 2147483648)) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 2147483647) (<= 0 (+ |outgoing_mail_~__utac__ad__arg2~0#1| 2147483648)) (<= 0 ~queue_empty~0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 2147483647) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 2147483647) (= ~__ste_client_outbuffer0~0 0) (<= |outgoing_#in~msg#1| 2147483647) (<= 0 (+ |outgoing_#in~client#1| 2147483648)) (<= 0 (+ |outgoing_sign_~msg#1| 2147483648)) (<= 0 (+ |old(~queued_client~0)| 2147483648)) (= ~__SELECTED_FEATURE_Base~0 0) (<= 0 (+ |old(~queued_message~0)| 2147483648)) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_getClientId_#in~handle#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_~tmp___0~3#1| 2147483648)) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 (+ |outgoing_getClientId_#in~handle#1| 2147483648)) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 (+ 2147483648 |outgoing_mail_~client#1|)) (<= |outgoing_mail_~client#1| 2147483647) (= ~__ste_email_subject1~0.base 0) (<= |outgoing_mail_~msg#1| 2147483647) (<= |old(~queue_empty~0)| 1) (<= |outgoing_mail_#in~msg#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 0 (+ |outgoing_#in~msg#1| 2147483648)) (= ~__ste_Client_Keyring2_User2~0 0) (<= 0 (+ |outgoing_sign_~client#1| 2147483648)) (= ~head~0.base 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 2147483647) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_~msg#1| 2147483647) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |old(~queued_message~0)| 2147483647) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483647) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483648)) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= 0 (+ |outgoing_sign_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook0_Alias1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~queued_client~0 2147483647) (<= |outgoing_sign_~client#1| 2147483647) (<= 0 (+ |outgoing_sign_#in~client#1| 2147483648)) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ |outgoing_mail_~__utac__ad__arg1~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (<= 0 (+ |outgoing_mail_#in~client#1| 2147483648)) (= ~__ste_ClientKeyring_size2~0 0) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~client#1| 2147483648)) (= |#NULL.base| 0))' at error location [2022-12-14 07:21:33,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:21:33,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:21:33,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17, 18] total 69 [2022-12-14 07:21:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820840762] [2022-12-14 07:21:33,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:21:33,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-14 07:21:33,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:21:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-14 07:21:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=22952, Unknown=0, NotChecked=0, Total=24492 [2022-12-14 07:21:33,136 INFO L87 Difference]: Start difference. First operand 67591 states and 108352 transitions. Second operand has 69 states, 48 states have (on average 4.4375) internal successors, (213), 55 states have internal predecessors, (213), 35 states have call successors, (71), 8 states have call predecessors, (71), 19 states have return successors, (69), 40 states have call predecessors, (69), 34 states have call successors, (69) [2022-12-14 07:21:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:21:59,774 INFO L93 Difference]: Finished difference Result 100797 states and 161352 transitions. [2022-12-14 07:21:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-14 07:21:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 48 states have (on average 4.4375) internal successors, (213), 55 states have internal predecessors, (213), 35 states have call successors, (71), 8 states have call predecessors, (71), 19 states have return successors, (69), 40 states have call predecessors, (69), 34 states have call successors, (69) Word has length 132 [2022-12-14 07:21:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:00,056 INFO L225 Difference]: With dead ends: 100797 [2022-12-14 07:22:00,056 INFO L226 Difference]: Without dead ends: 100693 [2022-12-14 07:22:00,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 276 SyntacticMatches, 5 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17830 ImplicationChecksByTransitivity, 275.0s TimeCoverageRelationStatistics Valid=3135, Invalid=52797, Unknown=0, NotChecked=0, Total=55932 [2022-12-14 07:22:00,095 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 2057 mSDsluCounter, 7045 mSDsCounter, 0 mSdLazyCounter, 11360 mSolverCounterSat, 1283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 7299 SdHoareTripleChecker+Invalid, 12643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1283 IncrementalHoareTripleChecker+Valid, 11360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:00,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 7299 Invalid, 12643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1283 Valid, 11360 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 07:22:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100693 states. [2022-12-14 07:22:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100693 to 100611. [2022-12-14 07:22:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100611 states, 77874 states have (on average 1.4864139507409404) internal successors, (115753), 77876 states have internal predecessors, (115753), 22682 states have call successors, (22682), 56 states have call predecessors, (22682), 54 states have return successors, (22680), 22678 states have call predecessors, (22680), 22680 states have call successors, (22680) [2022-12-14 07:22:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100611 states to 100611 states and 161115 transitions. [2022-12-14 07:22:15,898 INFO L78 Accepts]: Start accepts. Automaton has 100611 states and 161115 transitions. Word has length 132 [2022-12-14 07:22:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:15,898 INFO L495 AbstractCegarLoop]: Abstraction has 100611 states and 161115 transitions. [2022-12-14 07:22:15,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 48 states have (on average 4.4375) internal successors, (213), 55 states have internal predecessors, (213), 35 states have call successors, (71), 8 states have call predecessors, (71), 19 states have return successors, (69), 40 states have call predecessors, (69), 34 states have call successors, (69) [2022-12-14 07:22:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 100611 states and 161115 transitions. [2022-12-14 07:22:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-14 07:22:16,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:16,029 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-12-14 07:22:16,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 07:22:16,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 07:22:16,230 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:16,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1640255320, now seen corresponding path program 1 times [2022-12-14 07:22:16,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:16,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506381384] [2022-12-14 07:22:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:16,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-14 07:22:16,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:16,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506381384] [2022-12-14 07:22:16,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506381384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:16,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:16,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:22:16,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449168133] [2022-12-14 07:22:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:22:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:22:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:22:16,329 INFO L87 Difference]: Start difference. First operand 100611 states and 161115 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 07:22:25,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:25,562 INFO L93 Difference]: Finished difference Result 132082 states and 212091 transitions. [2022-12-14 07:22:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:22:25,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 139 [2022-12-14 07:22:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:25,740 INFO L225 Difference]: With dead ends: 132082 [2022-12-14 07:22:25,740 INFO L226 Difference]: Without dead ends: 67732 [2022-12-14 07:22:25,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:22:25,825 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 127 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:25,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 592 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67732 states. [2022-12-14 07:22:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67732 to 67732. [2022-12-14 07:22:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67732 states, 52308 states have (on average 1.4670413703448804) internal successors, (76738), 52310 states have internal predecessors, (76738), 15369 states have call successors, (15369), 56 states have call predecessors, (15369), 54 states have return successors, (15367), 15365 states have call predecessors, (15367), 15367 states have call successors, (15367) [2022-12-14 07:22:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67732 states to 67732 states and 107474 transitions. [2022-12-14 07:22:35,188 INFO L78 Accepts]: Start accepts. Automaton has 67732 states and 107474 transitions. Word has length 139 [2022-12-14 07:22:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:35,188 INFO L495 AbstractCegarLoop]: Abstraction has 67732 states and 107474 transitions. [2022-12-14 07:22:35,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 07:22:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 67732 states and 107474 transitions. [2022-12-14 07:22:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-14 07:22:35,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:35,275 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:35,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 07:22:35,276 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1434264697, now seen corresponding path program 1 times [2022-12-14 07:22:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:35,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237788034] [2022-12-14 07:22:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:35,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 07:22:36,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:36,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237788034] [2022-12-14 07:22:36,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237788034] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:22:36,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942108051] [2022-12-14 07:22:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:36,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:22:36,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:36,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:22:36,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:22:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:36,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-14 07:22:36,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 07:22:36,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:22:36,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942108051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:36,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:22:36,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 33 [2022-12-14 07:22:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364135759] [2022-12-14 07:22:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 07:22:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 07:22:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 07:22:36,836 INFO L87 Difference]: Start difference. First operand 67732 states and 107474 transitions. Second operand has 16 states, 12 states have (on average 6.916666666666667) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 07:22:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:46,785 INFO L93 Difference]: Finished difference Result 68011 states and 107768 transitions. [2022-12-14 07:22:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 07:22:46,786 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 6.916666666666667) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 142 [2022-12-14 07:22:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:46,958 INFO L225 Difference]: With dead ends: 68011 [2022-12-14 07:22:46,958 INFO L226 Difference]: Without dead ends: 67871 [2022-12-14 07:22:46,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=2020, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 07:22:46,975 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 313 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:46,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 2217 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 07:22:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67871 states. [2022-12-14 07:22:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67871 to 67859. [2022-12-14 07:22:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67859 states, 52377 states have (on average 1.4664261030605037) internal successors, (76807), 52382 states have internal predecessors, (76807), 15400 states have call successors, (15400), 81 states have call predecessors, (15400), 81 states have return successors, (15400), 15395 states have call predecessors, (15400), 15396 states have call successors, (15400) [2022-12-14 07:22:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67859 states to 67859 states and 107607 transitions. [2022-12-14 07:22:56,354 INFO L78 Accepts]: Start accepts. Automaton has 67859 states and 107607 transitions. Word has length 142 [2022-12-14 07:22:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:56,355 INFO L495 AbstractCegarLoop]: Abstraction has 67859 states and 107607 transitions. [2022-12-14 07:22:56,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 6.916666666666667) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 07:22:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 67859 states and 107607 transitions. [2022-12-14 07:22:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-14 07:22:56,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:56,447 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:56,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:22:56,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:22:56,649 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 822174631, now seen corresponding path program 1 times [2022-12-14 07:22:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:56,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637894463] [2022-12-14 07:22:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 07:22:58,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637894463] [2022-12-14 07:22:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637894463] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:22:58,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836593772] [2022-12-14 07:22:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:22:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:58,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:22:58,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a72dfcc-1c34-4e73-b106-320b01262bc2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:22:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:58,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 198 conjunts are in the unsatisfiable core [2022-12-14 07:22:58,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:23:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:23:00,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:23:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 07:23:23,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836593772] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:23:23,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [287269772] [2022-12-14 07:23:23,241 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-12-14 07:23:23,242 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:23:23,242 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:23:23,242 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:23:23,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:24:20,439 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 07:24:20,717 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 468 for LOIs [2022-12-14 07:25:08,165 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:25:08,447 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 436 for LOIs