./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P --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 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:32:31,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:32:31,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:32:31,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:32:31,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:32:31,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:32:31,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:32:31,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:32:31,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:32:31,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:32:31,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:32:31,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:32:31,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:32:31,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:32:31,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:32:31,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:32:31,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:32:31,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:32:31,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:32:31,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:32:31,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:32:31,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:32:31,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:32:31,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:32:31,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:32:31,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:32:31,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:32:31,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:32:31,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:32:31,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:32:31,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:32:31,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:32:31,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:32:31,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:32:31,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:32:31,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:32:31,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:32:31,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:32:31,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:32:31,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:32:31,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:32:31,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:32:31,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:32:31,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:32:31,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:32:31,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:32:31,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:32:31,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:32:31,434 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:32:31,434 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:32:31,434 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:32:31,434 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:32:31,436 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:32:31,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:32:31,436 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:32:31,436 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:32:31,437 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:32:31,437 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:32:31,437 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:32:31,437 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:32:31,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:32:31,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:32:31,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:32:31,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:32:31,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:32:31,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:32:31,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:32:31,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:32:31,442 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:32:31,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:32:31,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:32:31,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:32:31,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:32:31,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:32:31,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:31,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:32:31,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:32:31,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:32:31,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:32:31,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:32:31,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:32:31,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:32:31,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:32:31,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 [2021-11-20 23:32:31,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:32:31,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:32:31,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:32:31,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:32:31,713 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:32:31,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-11-20 23:32:31,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/data/e7f46ecc5/80436e8623da4eb58aec3a1bbc747e35/FLAG6a9abe510 [2021-11-20 23:32:32,389 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:32:32,391 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-11-20 23:32:32,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/data/e7f46ecc5/80436e8623da4eb58aec3a1bbc747e35/FLAG6a9abe510 [2021-11-20 23:32:32,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/data/e7f46ecc5/80436e8623da4eb58aec3a1bbc747e35 [2021-11-20 23:32:32,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:32:32,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:32:32,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:32,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:32:32,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:32:32,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:32" (1/1) ... [2021-11-20 23:32:32,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5360f372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:32, skipping insertion in model container [2021-11-20 23:32:32,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:32" (1/1) ... [2021-11-20 23:32:32,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:32:32,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:32:33,041 WARN L230 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_c27e8530-1925-463d-bc2d-c87c948decea/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-11-20 23:32:33,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:33,473 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:32:33,508 WARN L230 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_c27e8530-1925-463d-bc2d-c87c948decea/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-11-20 23:32:33,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:33,727 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:32:33,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33 WrapperNode [2021-11-20 23:32:33,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:33,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:33,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:32:33,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:32:33,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,902 INFO L137 Inliner]: procedures = 152, calls = 292, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1344 [2021-11-20 23:32:33,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:33,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:32:33,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:32:33,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:32:33,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:34,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:34,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:34,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:32:34,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:32:34,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:32:34,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:32:34,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:34,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:34,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:34,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:32:34,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:32:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-20 23:32:34,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-20 23:32:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-20 23:32:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-20 23:32:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-20 23:32:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-20 23:32:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-20 23:32:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-20 23:32:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-20 23:32:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-20 23:32:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-20 23:32:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-20 23:32:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-20 23:32:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-20 23:32:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-20 23:32:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-20 23:32:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 23:32:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 23:32:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-20 23:32:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-20 23:32:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 23:32:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 23:32:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 23:32:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 23:32:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 23:32:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 23:32:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-20 23:32:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-20 23:32:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-20 23:32:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-20 23:32:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-20 23:32:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-20 23:32:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 23:32:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 23:32:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 23:32:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 23:32:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 23:32:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-20 23:32:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-20 23:32:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 23:32:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 23:32:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-20 23:32:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-20 23:32:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 23:32:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 23:32:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-20 23:32:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-20 23:32:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:32:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 23:32:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 23:32:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-20 23:32:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-20 23:32:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-20 23:32:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-20 23:32:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-20 23:32:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-20 23:32:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-20 23:32:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-20 23:32:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-20 23:32:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-20 23:32:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 23:32:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 23:32:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-20 23:32:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-20 23:32:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 23:32:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 23:32:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 23:32:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 23:32:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-20 23:32:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-20 23:32:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 23:32:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 23:32:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-20 23:32:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-20 23:32:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-20 23:32:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-20 23:32:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-20 23:32:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-20 23:32:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 23:32:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 23:32:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 23:32:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 23:32:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:32:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 23:32:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 23:32:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-20 23:32:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-20 23:32:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-20 23:32:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-20 23:32:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-20 23:32:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-20 23:32:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:32:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:32:34,528 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:32:34,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:32:35,431 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:32:36,013 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:32:36,013 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:32:36,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:36 BoogieIcfgContainer [2021-11-20 23:32:36,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:32:36,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:32:36,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:32:36,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:32:36,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:32" (1/3) ... [2021-11-20 23:32:36,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edfca09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:36, skipping insertion in model container [2021-11-20 23:32:36,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (2/3) ... [2021-11-20 23:32:36,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edfca09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:36, skipping insertion in model container [2021-11-20 23:32:36,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:36" (3/3) ... [2021-11-20 23:32:36,026 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_productSimulator.cil.c [2021-11-20 23:32:36,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:32:36,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:32:36,086 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:32:36,093 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:32:36,094 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:32:36,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 229 states have (on average 1.331877729257642) internal successors, (305), 251 states have internal predecessors, (305), 115 states have call successors, (115), 44 states have call predecessors, (115), 44 states have return successors, (115), 113 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-20 23:32:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-20 23:32:36,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:36,163 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:36,167 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -932254766, now seen corresponding path program 1 times [2021-11-20 23:32:36,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:36,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174552392] [2021-11-20 23:32:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:36,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:32:36,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:36,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174552392] [2021-11-20 23:32:36,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174552392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:36,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:36,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:32:36,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296338315] [2021-11-20 23:32:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:36,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:32:36,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:32:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:32:36,671 INFO L87 Difference]: Start difference. First operand has 390 states, 229 states have (on average 1.331877729257642) internal successors, (305), 251 states have internal predecessors, (305), 115 states have call successors, (115), 44 states have call predecessors, (115), 44 states have return successors, (115), 113 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:32:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:37,041 INFO L93 Difference]: Finished difference Result 751 states and 1034 transitions. [2021-11-20 23:32:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:32:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 114 [2021-11-20 23:32:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:37,072 INFO L225 Difference]: With dead ends: 751 [2021-11-20 23:32:37,073 INFO L226 Difference]: Without dead ends: 386 [2021-11-20 23:32:37,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:32:37,089 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 6 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:37,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1422 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:32:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-20 23:32:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-20 23:32:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 227 states have (on average 1.2907488986784141) internal successors, (293), 247 states have internal predecessors, (293), 115 states have call successors, (115), 44 states have call predecessors, (115), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-20 23:32:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 520 transitions. [2021-11-20 23:32:37,207 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 520 transitions. Word has length 114 [2021-11-20 23:32:37,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:37,209 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 520 transitions. [2021-11-20 23:32:37,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:32:37,210 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 520 transitions. [2021-11-20 23:32:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 23:32:37,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:37,219 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:37,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:32:37,219 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -524970629, now seen corresponding path program 1 times [2021-11-20 23:32:37,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:37,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792795494] [2021-11-20 23:32:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:37,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:32:37,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:37,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792795494] [2021-11-20 23:32:37,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792795494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:37,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:37,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:37,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977986739] [2021-11-20 23:32:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:37,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:37,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:37,426 INFO L87 Difference]: Start difference. First operand 386 states and 520 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:32:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:37,594 INFO L93 Difference]: Finished difference Result 745 states and 1014 transitions. [2021-11-20 23:32:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:32:37,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 120 [2021-11-20 23:32:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:37,598 INFO L225 Difference]: With dead ends: 745 [2021-11-20 23:32:37,598 INFO L226 Difference]: Without dead ends: 386 [2021-11-20 23:32:37,600 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:32:37,601 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 487 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:37,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 469 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:32:37,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-20 23:32:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-20 23:32:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 228 states have (on average 1.2719298245614035) internal successors, (290), 246 states have internal predecessors, (290), 113 states have call successors, (113), 45 states have call predecessors, (113), 44 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-20 23:32:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 513 transitions. [2021-11-20 23:32:37,663 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 513 transitions. Word has length 120 [2021-11-20 23:32:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:37,666 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 513 transitions. [2021-11-20 23:32:37,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:32:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 513 transitions. [2021-11-20 23:32:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 23:32:37,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:37,681 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:37,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:32:37,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:37,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1215064972, now seen corresponding path program 1 times [2021-11-20 23:32:37,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:37,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9731014] [2021-11-20 23:32:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:37,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:32:37,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:37,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9731014] [2021-11-20 23:32:37,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9731014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:37,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:37,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:37,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385330435] [2021-11-20 23:32:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:37,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:37,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:37,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:37,914 INFO L87 Difference]: Start difference. First operand 386 states and 513 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:32:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:38,060 INFO L93 Difference]: Finished difference Result 739 states and 993 transitions. [2021-11-20 23:32:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:32:38,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 126 [2021-11-20 23:32:38,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:38,067 INFO L225 Difference]: With dead ends: 739 [2021-11-20 23:32:38,067 INFO L226 Difference]: Without dead ends: 384 [2021-11-20 23:32:38,069 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:32:38,076 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 468 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:38,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 482 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:32:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-20 23:32:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-11-20 23:32:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 228 states have (on average 1.2587719298245614) internal successors, (287), 244 states have internal predecessors, (287), 111 states have call successors, (111), 45 states have call predecessors, (111), 44 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-20 23:32:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 506 transitions. [2021-11-20 23:32:38,122 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 506 transitions. Word has length 126 [2021-11-20 23:32:38,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:38,122 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 506 transitions. [2021-11-20 23:32:38,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:32:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 506 transitions. [2021-11-20 23:32:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 23:32:38,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:38,129 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:38,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:32:38,130 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash 145443773, now seen corresponding path program 1 times [2021-11-20 23:32:38,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:38,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046615652] [2021-11-20 23:32:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:38,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:32:38,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:38,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046615652] [2021-11-20 23:32:38,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046615652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:38,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:38,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:38,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380004177] [2021-11-20 23:32:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:38,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:38,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:38,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:38,258 INFO L87 Difference]: Start difference. First operand 384 states and 506 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:32:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:38,413 INFO L93 Difference]: Finished difference Result 731 states and 960 transitions. [2021-11-20 23:32:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:32:38,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 127 [2021-11-20 23:32:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:38,419 INFO L225 Difference]: With dead ends: 731 [2021-11-20 23:32:38,419 INFO L226 Difference]: Without dead ends: 387 [2021-11-20 23:32:38,421 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:32:38,429 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 449 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:38,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 465 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:32:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-20 23:32:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2021-11-20 23:32:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 228 states have (on average 1.2105263157894737) internal successors, (276), 239 states have internal predecessors, (276), 108 states have call successors, (108), 45 states have call predecessors, (108), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-20 23:32:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 489 transitions. [2021-11-20 23:32:38,467 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 489 transitions. Word has length 127 [2021-11-20 23:32:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:38,467 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 489 transitions. [2021-11-20 23:32:38,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:32:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 489 transitions. [2021-11-20 23:32:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-20 23:32:38,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:38,472 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:38,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:32:38,472 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:38,483 INFO L85 PathProgramCache]: Analyzing trace with hash 438974621, now seen corresponding path program 1 times [2021-11-20 23:32:38,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:38,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397816494] [2021-11-20 23:32:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:38,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:32:38,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:38,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397816494] [2021-11-20 23:32:38,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397816494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:38,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:38,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:38,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404202770] [2021-11-20 23:32:38,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:38,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:38,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:38,627 INFO L87 Difference]: Start difference. First operand 381 states and 489 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:32:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:38,821 INFO L93 Difference]: Finished difference Result 607 states and 773 transitions. [2021-11-20 23:32:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:32:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 139 [2021-11-20 23:32:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:38,827 INFO L225 Difference]: With dead ends: 607 [2021-11-20 23:32:38,827 INFO L226 Difference]: Without dead ends: 383 [2021-11-20 23:32:38,829 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:32:38,831 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 0 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:38,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 871 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:32:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-20 23:32:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2021-11-20 23:32:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 230 states have (on average 1.208695652173913) internal successors, (278), 241 states have internal predecessors, (278), 108 states have call successors, (108), 45 states have call predecessors, (108), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-20 23:32:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 491 transitions. [2021-11-20 23:32:38,863 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 491 transitions. Word has length 139 [2021-11-20 23:32:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:38,865 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 491 transitions. [2021-11-20 23:32:38,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:32:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 491 transitions. [2021-11-20 23:32:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-20 23:32:38,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:38,869 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:38,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:32:38,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1184590924, now seen corresponding path program 1 times [2021-11-20 23:32:38,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:38,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354980760] [2021-11-20 23:32:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:38,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:32:38,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:38,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354980760] [2021-11-20 23:32:38,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354980760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:38,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:38,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:38,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985032016] [2021-11-20 23:32:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:38,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:38,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:38,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:38,991 INFO L87 Difference]: Start difference. First operand 383 states and 491 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:32:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:39,142 INFO L93 Difference]: Finished difference Result 766 states and 1006 transitions. [2021-11-20 23:32:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:32:39,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 144 [2021-11-20 23:32:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:39,153 INFO L225 Difference]: With dead ends: 766 [2021-11-20 23:32:39,153 INFO L226 Difference]: Without dead ends: 450 [2021-11-20 23:32:39,155 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:32:39,156 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 76 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:39,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 886 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:32:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-20 23:32:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2021-11-20 23:32:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 278 states have (on average 1.2517985611510791) internal successors, (348), 289 states have internal predecessors, (348), 122 states have call successors, (122), 45 states have call predecessors, (122), 44 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2021-11-20 23:32:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 589 transitions. [2021-11-20 23:32:39,196 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 589 transitions. Word has length 144 [2021-11-20 23:32:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:39,196 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 589 transitions. [2021-11-20 23:32:39,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:32:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 589 transitions. [2021-11-20 23:32:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 23:32:39,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:39,200 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:39,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:32:39,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2019740080, now seen corresponding path program 1 times [2021-11-20 23:32:39,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:39,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049035241] [2021-11-20 23:32:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:39,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:32:39,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:39,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049035241] [2021-11-20 23:32:39,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049035241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:32:39,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459745124] [2021-11-20 23:32:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:39,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:32:39,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:39,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:32:39,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c27e8530-1925-463d-bc2d-c87c948decea/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:32:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:39,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:32:39,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:32:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:32:40,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:32:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:32:40,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459745124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:32:40,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171273143] [2021-11-20 23:32:40,514 INFO L159 IcfgInterpreter]: Started Sifa with 120 locations of interest [2021-11-20 23:32:40,514 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:32:40,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:32:40,527 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:32:40,528 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:40:02,268 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 511 for LOIs [2021-11-20 23:40:25,613 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 517 for LOIs [2021-11-20 23:40:50,703 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-20 23:40:55,940 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 511 for LOIs [2021-11-20 23:41:19,244 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2021-11-20 23:41:23,870 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-20 23:41:31,445 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:29,093 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 569 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:43:37,668 WARN L227 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 569 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:43:44,788 WARN L227 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 568 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:43:48,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [171273143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:48,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:48,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2021-11-20 23:43:48,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086220900] [2021-11-20 23:43:48,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:48,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-20 23:43:48,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-20 23:43:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3300, Unknown=0, NotChecked=0, Total=3540 [2021-11-20 23:43:48,922 INFO L87 Difference]: Start difference. First operand 445 states and 589 transitions. Second operand has 55 states, 37 states have (on average 2.027027027027027) internal successors, (75), 39 states have internal predecessors, (75), 16 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (25), 18 states have call predecessors, (25), 16 states have call successors, (25) [2021-11-20 23:43:59,985 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 604 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:44:05,586 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 603 DAG size of output: 527 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:44:11,245 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 602 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:44:16,879 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 601 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:44:22,515 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 600 DAG size of output: 533 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:44:28,061 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 599 DAG size of output: 535 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:44:33,619 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 598 DAG size of output: 537 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)