./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI --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 ee2b8c4c449b1e8aa7dd92109d118d4c0b36a93d6052f04f0a75223fa59783b7 --- 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-5e519f3 [2022-11-03 02:45:31,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:45:31,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:45:31,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:45:31,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:45:31,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:45:31,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:45:31,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:45:31,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:45:31,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:45:31,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:45:31,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:45:31,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:45:31,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:45:31,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:45:31,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:45:31,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:45:31,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:45:31,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:45:31,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:45:31,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:45:31,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:45:31,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:45:31,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:45:31,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:45:31,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:45:31,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:45:31,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:45:31,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:45:31,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:45:31,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:45:31,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:45:31,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:45:31,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:45:31,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:45:31,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:45:31,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:45:31,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:45:31,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:45:31,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:45:31,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:45:31,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:45:31,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:45:31,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:45:31,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:45:31,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:45:31,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:45:31,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:45:31,446 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:45:31,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:45:31,447 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:45:31,447 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:45:31,448 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:45:31,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:45:31,448 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:45:31,449 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:45:31,449 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:45:31,449 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:45:31,449 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:45:31,449 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:45:31,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:45:31,450 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:45:31,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:45:31,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:45:31,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:45:31,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:45:31,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:45:31,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:45:31,453 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:45:31,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:45:31,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:45:31,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:45:31,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:45:31,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:45:31,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:45:31,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:45:31,455 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:45:31,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:45:31,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:45:31,456 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:45:31,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:45:31,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:45:31,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:45:31,457 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_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee2b8c4c449b1e8aa7dd92109d118d4c0b36a93d6052f04f0a75223fa59783b7 [2022-11-03 02:45:31,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:45:31,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:45:31,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:45:31,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:45:31,781 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:45:31,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec7_product32.cil.c [2022-11-03 02:45:31,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/data/2eeb7db1d/d751e272ddbc4145b4367f24b186732d/FLAGfda4f3155 [2022-11-03 02:45:32,575 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:45:32,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/sv-benchmarks/c/product-lines/email_spec7_product32.cil.c [2022-11-03 02:45:32,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/data/2eeb7db1d/d751e272ddbc4145b4367f24b186732d/FLAGfda4f3155 [2022-11-03 02:45:32,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/data/2eeb7db1d/d751e272ddbc4145b4367f24b186732d [2022-11-03 02:45:32,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:45:32,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:45:32,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:45:32,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:45:32,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:45:32,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:45:32" (1/1) ... [2022-11-03 02:45:32,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136af347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:32, skipping insertion in model container [2022-11-03 02:45:32,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:45:32" (1/1) ... [2022-11-03 02:45:32,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:45:32,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:45:33,243 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_17253b40-77ac-4e97-b691-45d7cfcee176/sv-benchmarks/c/product-lines/email_spec7_product32.cil.c[6103,6116] [2022-11-03 02:45:33,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:45:33,605 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:45:33,634 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_17253b40-77ac-4e97-b691-45d7cfcee176/sv-benchmarks/c/product-lines/email_spec7_product32.cil.c[6103,6116] [2022-11-03 02:45:33,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:45:33,816 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:45:33,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33 WrapperNode [2022-11-03 02:45:33,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:45:33,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:45:33,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:45:33,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:45:33,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:33,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:33,974 INFO L138 Inliner]: procedures = 134, calls = 234, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 974 [2022-11-03 02:45:33,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:45:33,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:45:33,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:45:33,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:45:34,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:45:34,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:45:34,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:45:34,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:45:34,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (1/1) ... [2022-11-03 02:45:34,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:45:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:45:34,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:45:34,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:45:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:45:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:45:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:45:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:45:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:45:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:45:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:45:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:45:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:45:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:45:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:45:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:45:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:45:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:45:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:45:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:45:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:45:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:45:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:45:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:45:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:45:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:45:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:45:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:45:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:45:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:45:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:45:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:45:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:45:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:45:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:45:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:45:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:45:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:45:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:45:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:45:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:45:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:45:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:45:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:45:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:45:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:45:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:45:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:45:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:45:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:45:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:45:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:45:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:45:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:45:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:45:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:45:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:45:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:45:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:45:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:45:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:45:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:45:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:45:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:45:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:45:34,455 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:45:34,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:45:35,510 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:45:36,212 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:45:36,212 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:45:36,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:45:36 BoogieIcfgContainer [2022-11-03 02:45:36,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:45:36,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:45:36,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:45:36,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:45:36,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:45:32" (1/3) ... [2022-11-03 02:45:36,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee3176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:45:36, skipping insertion in model container [2022-11-03 02:45:36,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:45:33" (2/3) ... [2022-11-03 02:45:36,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee3176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:45:36, skipping insertion in model container [2022-11-03 02:45:36,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:45:36" (3/3) ... [2022-11-03 02:45:36,229 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product32.cil.c [2022-11-03 02:45:36,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:45:36,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:45:36,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:45:36,321 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;@7357aa16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:45:36,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:45:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:45:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 02:45:36,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:36,342 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:36,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:36,349 INFO L85 PathProgramCache]: Analyzing trace with hash 831699076, now seen corresponding path program 1 times [2022-11-03 02:45:36,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:36,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027815385] [2022-11-03 02:45:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:36,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:45:36,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:36,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027815385] [2022-11-03 02:45:36,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027815385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:36,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:36,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:45:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405708203] [2022-11-03 02:45:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:36,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:45:36,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:36,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:45:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:45:36,902 INFO L87 Difference]: Start difference. First operand has 216 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:45:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:37,131 INFO L93 Difference]: Finished difference Result 340 states and 445 transitions. [2022-11-03 02:45:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:45:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 95 [2022-11-03 02:45:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:37,145 INFO L225 Difference]: With dead ends: 340 [2022-11-03 02:45:37,145 INFO L226 Difference]: Without dead ends: 213 [2022-11-03 02:45:37,150 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 [2022-11-03 02:45:37,153 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:37,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-03 02:45:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-03 02:45:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 120 states have (on average 1.275) internal successors, (153), 124 states have internal predecessors, (153), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:45:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2022-11-03 02:45:37,209 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 95 [2022-11-03 02:45:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:37,210 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2022-11-03 02:45:37,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:45:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2022-11-03 02:45:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:45:37,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:37,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:37,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:45:37,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2049203160, now seen corresponding path program 1 times [2022-11-03 02:45:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:37,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146954690] [2022-11-03 02:45:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:45:37,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:37,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146954690] [2022-11-03 02:45:37,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146954690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:37,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:37,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:45:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219501288] [2022-11-03 02:45:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:45:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:45:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:45:37,501 INFO L87 Difference]: Start difference. First operand 213 states and 280 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:45:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:37,627 INFO L93 Difference]: Finished difference Result 336 states and 430 transitions. [2022-11-03 02:45:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:45:37,628 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 85 [2022-11-03 02:45:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:37,631 INFO L225 Difference]: With dead ends: 336 [2022-11-03 02:45:37,631 INFO L226 Difference]: Without dead ends: 215 [2022-11-03 02:45:37,633 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 [2022-11-03 02:45:37,634 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:37,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-03 02:45:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-11-03 02:45:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 126 states have internal predecessors, (155), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:45:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2022-11-03 02:45:37,656 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 85 [2022-11-03 02:45:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:37,657 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2022-11-03 02:45:37,657 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:45:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2022-11-03 02:45:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 02:45:37,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:37,661 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:45:37,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash -730212502, now seen corresponding path program 1 times [2022-11-03 02:45:37,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:37,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157022379] [2022-11-03 02:45:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:37,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:45:37,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:37,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157022379] [2022-11-03 02:45:37,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157022379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:37,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:37,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:45:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618738663] [2022-11-03 02:45:37,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:37,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:45:37,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:45:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:45:37,917 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:45:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:38,093 INFO L93 Difference]: Finished difference Result 465 states and 631 transitions. [2022-11-03 02:45:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:45:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 101 [2022-11-03 02:45:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:38,101 INFO L225 Difference]: With dead ends: 465 [2022-11-03 02:45:38,101 INFO L226 Difference]: Without dead ends: 268 [2022-11-03 02:45:38,103 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 [2022-11-03 02:45:38,110 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 59 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:38,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 493 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-03 02:45:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 263. [2022-11-03 02:45:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 160 states have internal predecessors, (210), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-03 02:45:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 365 transitions. [2022-11-03 02:45:38,180 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 365 transitions. Word has length 101 [2022-11-03 02:45:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:38,180 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 365 transitions. [2022-11-03 02:45:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:45:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 365 transitions. [2022-11-03 02:45:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:45:38,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:38,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:38,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:45:38,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:38,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:38,193 INFO L85 PathProgramCache]: Analyzing trace with hash -20894474, now seen corresponding path program 1 times [2022-11-03 02:45:38,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:38,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827160035] [2022-11-03 02:45:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:38,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:45:38,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:38,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827160035] [2022-11-03 02:45:38,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827160035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:45:38,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396858782] [2022-11-03 02:45:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:38,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:45:38,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:45:38,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:45:38,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:45:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:38,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:45:38,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:45:38,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:45:39,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396858782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:39,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [55600621] [2022-11-03 02:45:39,052 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-03 02:45:39,052 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:45:39,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:45:39,066 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:45:39,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:46:34,957 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:46:35,287 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-11-03 02:46:37,349 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 02:46:37,391 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:46:37,692 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-11-03 02:46:41,324 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-11-03 02:46:53,899 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-03 02:46:54,613 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-03 02:46:54,672 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-11-03 02:46:55,305 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-03 02:46:55,374 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-11-03 02:46:56,014 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-03 02:47:00,915 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-11-03 02:47:00,966 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:47:50,162 WARN L234 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 498 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:12,105 WARN L234 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 560 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:20,236 WARN L234 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 566 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:32,979 WARN L234 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 473 DAG size of output: 279 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:41,841 WARN L234 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 495 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:06,603 WARN L234 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 452 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:18,305 WARN L234 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 478 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:48,250 WARN L234 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 431 DAG size of output: 255 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:02,420 WARN L234 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 450 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:08,579 WARN L234 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 467 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:20,895 WARN L234 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 473 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:27,223 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 475 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:35,338 WARN L234 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 517 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:49,031 WARN L234 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 527 DAG size of output: 421 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:40,391 WARN L234 SmtUtils]: Spent 18.60s on a formula simplification. DAG size of input: 598 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:52,894 WARN L234 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 595 DAG size of output: 475 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:52,901 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3744#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~42#1| 2147483647) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~5#1| 2) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~42#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| |outgoing__wrappee__AutoResponder_incoming_~tmp~10#1|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~3#1|) (= ~__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) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~3#1| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| 2) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~7#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= |outgoing__wrappee__AutoResponder_verify_~client#1| |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__AutoResponder_verify_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1| 2147483647) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~6#1|)) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (<= 3 ~__ste_client_idCounter2~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (<= 0 |outgoing__wrappee__AutoResponder_incoming_~tmp~10#1|) (= ~__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) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (= |outgoing__wrappee__AutoResponder_verify_#in~client#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_verify_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (= |outgoing__wrappee__AutoResponder___utac_acc__EncryptVerify_spec__1_~tmp~16#1| 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~tmp~10#1| 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (= |outgoing__wrappee__AutoResponder_verify_~msg#1| |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__AutoResponder_~tmp~7#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~5#1|) (<= ~queued_client~0 0))' at error location [2022-11-03 02:51:52,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:51:52,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:51:52,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 02:51:52,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295007151] [2022-11-03 02:51:52,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:51:52,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=5039, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 02:51:52,907 INFO L87 Difference]: Start difference. First operand 263 states and 365 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:51:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:53,371 INFO L93 Difference]: Finished difference Result 659 states and 980 transitions. [2022-11-03 02:51:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:51:53,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 91 [2022-11-03 02:51:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:53,377 INFO L225 Difference]: With dead ends: 659 [2022-11-03 02:51:53,378 INFO L226 Difference]: Without dead ends: 538 [2022-11-03 02:51:53,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 291.9s TimeCoverageRelationStatistics Valid=217, Invalid=5039, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 02:51:53,385 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 225 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:53,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1170 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-03 02:51:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 523. [2022-11-03 02:51:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 337 states have (on average 1.4718100890207715) internal successors, (496), 341 states have internal predecessors, (496), 157 states have call successors, (157), 28 states have call predecessors, (157), 28 states have return successors, (156), 155 states have call predecessors, (156), 156 states have call successors, (156) [2022-11-03 02:51:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 809 transitions. [2022-11-03 02:51:53,446 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 809 transitions. Word has length 91 [2022-11-03 02:51:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:53,447 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 809 transitions. [2022-11-03 02:51:53,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:51:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 809 transitions. [2022-11-03 02:51:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:51:53,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:53,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:53,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:53,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17253b40-77ac-4e97-b691-45d7cfcee176/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:53,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2091802851, now seen corresponding path program 1 times [2022-11-03 02:51:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:53,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484406643] [2022-11-03 02:51:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:51:53,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:53,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484406643] [2022-11-03 02:51:53,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484406643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:53,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:53,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227564155] [2022-11-03 02:51:53,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:53,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:53,827 INFO L87 Difference]: Start difference. First operand 523 states and 809 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:54,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:54,000 INFO L93 Difference]: Finished difference Result 1276 states and 2016 transitions. [2022-11-03 02:51:54,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:54,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 97 [2022-11-03 02:51:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:54,009 INFO L225 Difference]: With dead ends: 1276 [2022-11-03 02:51:54,009 INFO L226 Difference]: Without dead ends: 785 [2022-11-03 02:51:54,011 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 [2022-11-03 02:51:54,012 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 57 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:54,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 505 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-03 02:51:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 780. [2022-11-03 02:51:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 515 states have (on average 1.4932038834951455) internal successors, (769), 519 states have internal predecessors, (769), 236 states have call successors, (236), 28 states have call predecessors, (236), 28 states have return successors, (235), 234 states have call predecessors, (235), 235 states have call successors, (235) [2022-11-03 02:51:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1240 transitions. [2022-11-03 02:51:54,081 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1240 transitions. Word has length 97 [2022-11-03 02:51:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:54,082 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1240 transitions. [2022-11-03 02:51:54,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:54,083 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1240 transitions. [2022-11-03 02:51:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 02:51:54,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:54,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:54,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:51:54,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:54,089 INFO L85 PathProgramCache]: Analyzing trace with hash 428308576, now seen corresponding path program 1 times [2022-11-03 02:51:54,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:54,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370560599] [2022-11-03 02:51:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:54,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:51:54,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:54,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370560599] [2022-11-03 02:51:54,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370560599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:54,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:54,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:54,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598964037] [2022-11-03 02:51:54,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:54,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:54,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:54,236 INFO L87 Difference]: Start difference. First operand 780 states and 1240 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:54,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:54,444 INFO L93 Difference]: Finished difference Result 1898 states and 3063 transitions. [2022-11-03 02:51:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:54,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 98 [2022-11-03 02:51:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:54,452 INFO L225 Difference]: With dead ends: 1898 [2022-11-03 02:51:54,452 INFO L226 Difference]: Without dead ends: 1180 [2022-11-03 02:51:54,455 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 [2022-11-03 02:51:54,456 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 55 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:54,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 494 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-03 02:51:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1175. [2022-11-03 02:51:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 791 states have (on average 1.5031605562579013) internal successors, (1189), 795 states have internal predecessors, (1189), 355 states have call successors, (355), 28 states have call predecessors, (355), 28 states have return successors, (354), 353 states have call predecessors, (354), 354 states have call successors, (354) [2022-11-03 02:51:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1898 transitions. [2022-11-03 02:51:54,548 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1898 transitions. Word has length 98 [2022-11-03 02:51:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:54,551 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1898 transitions. [2022-11-03 02:51:54,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1898 transitions. [2022-11-03 02:51:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 02:51:54,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:54,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:54,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:51:54,560 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:54,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash 701508555, now seen corresponding path program 1 times [2022-11-03 02:51:54,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:54,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604868576] [2022-11-03 02:51:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:54,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:51:54,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604868576] [2022-11-03 02:51:54,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604868576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:54,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:54,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336104798] [2022-11-03 02:51:54,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:54,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:54,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:54,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:54,683 INFO L87 Difference]: Start difference. First operand 1175 states and 1898 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:54,892 INFO L93 Difference]: Finished difference Result 2801 states and 4575 transitions. [2022-11-03 02:51:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 99 [2022-11-03 02:51:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:54,905 INFO L225 Difference]: With dead ends: 2801 [2022-11-03 02:51:54,905 INFO L226 Difference]: Without dead ends: 1768 [2022-11-03 02:51:54,910 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 [2022-11-03 02:51:54,911 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 53 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:54,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 487 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2022-11-03 02:51:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2022-11-03 02:51:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1217 states have (on average 1.5094494658997535) internal successors, (1837), 1221 states have internal predecessors, (1837), 517 states have call successors, (517), 28 states have call predecessors, (517), 28 states have return successors, (516), 515 states have call predecessors, (516), 516 states have call successors, (516) [2022-11-03 02:51:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2870 transitions. [2022-11-03 02:51:55,066 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2870 transitions. Word has length 99 [2022-11-03 02:51:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:55,067 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2870 transitions. [2022-11-03 02:51:55,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2870 transitions. [2022-11-03 02:51:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 02:51:55,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:55,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:55,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:51:55,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:55,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1845721119, now seen corresponding path program 1 times [2022-11-03 02:51:55,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:55,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190641164] [2022-11-03 02:51:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:55,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:51:55,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:55,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190641164] [2022-11-03 02:51:55,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190641164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:55,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:55,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:55,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997348611] [2022-11-03 02:51:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:55,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:55,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:55,192 INFO L87 Difference]: Start difference. First operand 1763 states and 2870 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:55,526 INFO L93 Difference]: Finished difference Result 4186 states and 6883 transitions. [2022-11-03 02:51:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:55,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 100 [2022-11-03 02:51:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:55,543 INFO L225 Difference]: With dead ends: 4186 [2022-11-03 02:51:55,543 INFO L226 Difference]: Without dead ends: 2702 [2022-11-03 02:51:55,548 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 [2022-11-03 02:51:55,549 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 51 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:55,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 485 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:55,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2022-11-03 02:51:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2697. [2022-11-03 02:51:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1906 states have (on average 1.512591815320042) internal successors, (2883), 1910 states have internal predecessors, (2883), 762 states have call successors, (762), 28 states have call predecessors, (762), 28 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) [2022-11-03 02:51:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4406 transitions. [2022-11-03 02:51:55,779 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4406 transitions. Word has length 100 [2022-11-03 02:51:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:55,780 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4406 transitions. [2022-11-03 02:51:55,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4406 transitions. [2022-11-03 02:51:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 02:51:55,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:55,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:55,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:51:55,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:55,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1559339865, now seen corresponding path program 1 times [2022-11-03 02:51:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:55,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691736629] [2022-11-03 02:51:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:55,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:51:55,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:55,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691736629] [2022-11-03 02:51:55,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691736629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:55,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:55,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985576297] [2022-11-03 02:51:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:55,895 INFO L87 Difference]: Start difference. First operand 2697 states and 4406 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:56,267 INFO L93 Difference]: Finished difference Result 6702 states and 11043 transitions. [2022-11-03 02:51:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:56,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 101 [2022-11-03 02:51:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:56,292 INFO L225 Difference]: With dead ends: 6702 [2022-11-03 02:51:56,292 INFO L226 Difference]: Without dead ends: 4427 [2022-11-03 02:51:56,299 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 [2022-11-03 02:51:56,302 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 49 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:56,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 499 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:56,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2022-11-03 02:51:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4422. [2022-11-03 02:51:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 3138 states have (on average 1.502868068833652) internal successors, (4716), 3142 states have internal predecessors, (4716), 1255 states have call successors, (1255), 28 states have call predecessors, (1255), 28 states have return successors, (1254), 1253 states have call predecessors, (1254), 1254 states have call successors, (1254) [2022-11-03 02:51:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 7225 transitions. [2022-11-03 02:51:56,659 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 7225 transitions. Word has length 101 [2022-11-03 02:51:56,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:56,659 INFO L495 AbstractCegarLoop]: Abstraction has 4422 states and 7225 transitions. [2022-11-03 02:51:56,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 7225 transitions. [2022-11-03 02:51:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:51:56,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:56,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:56,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:51:56,681 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:56,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576443, now seen corresponding path program 1 times [2022-11-03 02:51:56,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:56,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948322433] [2022-11-03 02:51:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:56,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:51:56,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:56,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948322433] [2022-11-03 02:51:56,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948322433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:56,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:56,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095844667] [2022-11-03 02:51:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:56,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:56,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:56,773 INFO L87 Difference]: Start difference. First operand 4422 states and 7225 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:57,381 INFO L93 Difference]: Finished difference Result 11118 states and 18328 transitions. [2022-11-03 02:51:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2022-11-03 02:51:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:57,424 INFO L225 Difference]: With dead ends: 11118 [2022-11-03 02:51:57,424 INFO L226 Difference]: Without dead ends: 7384 [2022-11-03 02:51:57,434 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 [2022-11-03 02:51:57,435 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 47 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:57,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 492 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2022-11-03 02:51:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 7379. [2022-11-03 02:51:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 5273 states have (on average 1.4983880144130477) internal successors, (7901), 5277 states have internal predecessors, (7901), 2077 states have call successors, (2077), 28 states have call predecessors, (2077), 28 states have return successors, (2076), 2075 states have call predecessors, (2076), 2076 states have call successors, (2076) [2022-11-03 02:51:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 12054 transitions. [2022-11-03 02:51:58,096 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 12054 transitions. Word has length 102 [2022-11-03 02:51:58,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:58,097 INFO L495 AbstractCegarLoop]: Abstraction has 7379 states and 12054 transitions. [2022-11-03 02:51:58,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:58,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 12054 transitions. [2022-11-03 02:51:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 02:51:58,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:58,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:58,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:51:58,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash -175892919, now seen corresponding path program 1 times [2022-11-03 02:51:58,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:58,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229210578] [2022-11-03 02:51:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:51:58,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:58,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229210578] [2022-11-03 02:51:58,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229210578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:58,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:58,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:58,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064368684] [2022-11-03 02:51:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:58,259 INFO L87 Difference]: Start difference. First operand 7379 states and 12054 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:51:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:59,359 INFO L93 Difference]: Finished difference Result 18585 states and 30590 transitions. [2022-11-03 02:51:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:59,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2022-11-03 02:51:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:59,445 INFO L225 Difference]: With dead ends: 18585 [2022-11-03 02:51:59,445 INFO L226 Difference]: Without dead ends: 12328 [2022-11-03 02:51:59,465 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 [2022-11-03 02:51:59,466 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 45 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:59,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 489 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2022-11-03 02:52:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12323. [2022-11-03 02:52:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12323 states, 9014 states have (on average 1.5001109385400488) internal successors, (13522), 9018 states have internal predecessors, (13522), 3280 states have call successors, (3280), 28 states have call predecessors, (3280), 28 states have return successors, (3279), 3278 states have call predecessors, (3279), 3279 states have call successors, (3279) [2022-11-03 02:52:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12323 states to 12323 states and 20081 transitions. [2022-11-03 02:52:00,646 INFO L78 Accepts]: Start accepts. Automaton has 12323 states and 20081 transitions. Word has length 103 [2022-11-03 02:52:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:00,647 INFO L495 AbstractCegarLoop]: Abstraction has 12323 states and 20081 transitions. [2022-11-03 02:52:00,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:52:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 12323 states and 20081 transitions. [2022-11-03 02:52:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 02:52:00,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:00,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:00,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:52:00,686 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1079901658, now seen corresponding path program 1 times [2022-11-03 02:52:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:00,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041815732] [2022-11-03 02:52:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:52:00,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:00,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041815732] [2022-11-03 02:52:00,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041815732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:00,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:00,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258007555] [2022-11-03 02:52:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:00,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:00,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:00,791 INFO L87 Difference]: Start difference. First operand 12323 states and 20081 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:52:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:02,830 INFO L93 Difference]: Finished difference Result 32589 states and 53452 transitions. [2022-11-03 02:52:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:02,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 104 [2022-11-03 02:52:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:02,937 INFO L225 Difference]: With dead ends: 32589 [2022-11-03 02:52:02,938 INFO L226 Difference]: Without dead ends: 21840 [2022-11-03 02:52:02,976 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 [2022-11-03 02:52:02,977 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 43 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:02,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 490 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21840 states. [2022-11-03 02:52:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21840 to 21835. [2022-11-03 02:52:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21835 states, 16076 states have (on average 1.4925976611097287) internal successors, (23995), 16080 states have internal predecessors, (23995), 5730 states have call successors, (5730), 28 states have call predecessors, (5730), 28 states have return successors, (5729), 5728 states have call predecessors, (5729), 5729 states have call successors, (5729) [2022-11-03 02:52:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21835 states to 21835 states and 35454 transitions. [2022-11-03 02:52:05,175 INFO L78 Accepts]: Start accepts. Automaton has 21835 states and 35454 transitions. Word has length 104 [2022-11-03 02:52:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:05,177 INFO L495 AbstractCegarLoop]: Abstraction has 21835 states and 35454 transitions. [2022-11-03 02:52:05,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:52:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 21835 states and 35454 transitions. [2022-11-03 02:52:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:52:05,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:05,230 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:52:05,231 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:05,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1725218499, now seen corresponding path program 1 times [2022-11-03 02:52:05,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:05,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851659968] [2022-11-03 02:52:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:05,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:52:05,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:05,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851659968] [2022-11-03 02:52:05,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851659968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:05,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:05,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337404055] [2022-11-03 02:52:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:05,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:05,363 INFO L87 Difference]: Start difference. First operand 21835 states and 35454 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:52:08,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:08,197 INFO L93 Difference]: Finished difference Result 59276 states and 96704 transitions. [2022-11-03 02:52:08,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:08,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 116 [2022-11-03 02:52:08,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:08,444 INFO L225 Difference]: With dead ends: 59276 [2022-11-03 02:52:08,445 INFO L226 Difference]: Without dead ends: 39610 [2022-11-03 02:52:08,503 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 [2022-11-03 02:52:08,504 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 41 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:08,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 493 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39610 states. [2022-11-03 02:52:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39610 to 39605. [2022-11-03 02:52:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39605 states, 29333 states have (on average 1.481982749803975) internal successors, (43471), 29337 states have internal predecessors, (43471), 10243 states have call successors, (10243), 28 states have call predecessors, (10243), 28 states have return successors, (10242), 10241 states have call predecessors, (10242), 10242 states have call successors, (10242) [2022-11-03 02:52:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39605 states to 39605 states and 63956 transitions. [2022-11-03 02:52:12,423 INFO L78 Accepts]: Start accepts. Automaton has 39605 states and 63956 transitions. Word has length 116 [2022-11-03 02:52:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:12,424 INFO L495 AbstractCegarLoop]: Abstraction has 39605 states and 63956 transitions. [2022-11-03 02:52:12,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:52:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 39605 states and 63956 transitions. [2022-11-03 02:52:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-03 02:52:12,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:12,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:12,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:52:12,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1979593690, now seen corresponding path program 1 times [2022-11-03 02:52:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:12,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920757498] [2022-11-03 02:52:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:12,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:52:12,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:12,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920757498] [2022-11-03 02:52:12,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920757498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:12,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:12,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28799340] [2022-11-03 02:52:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:12,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:12,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:12,671 INFO L87 Difference]: Start difference. First operand 39605 states and 63956 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:52:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:17,825 INFO L93 Difference]: Finished difference Result 73174 states and 118339 transitions. [2022-11-03 02:52:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 106 [2022-11-03 02:52:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:18,186 INFO L225 Difference]: With dead ends: 73174 [2022-11-03 02:52:18,186 INFO L226 Difference]: Without dead ends: 73053 [2022-11-03 02:52:18,216 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 [2022-11-03 02:52:18,217 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 39 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:18,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 490 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73053 states. [2022-11-03 02:52:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73053 to 73048. [2022-11-03 02:52:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73048 states, 54408 states have (on average 1.4680377885605058) internal successors, (79873), 54412 states have internal predecessors, (79873), 18611 states have call successors, (18611), 28 states have call predecessors, (18611), 28 states have return successors, (18610), 18609 states have call predecessors, (18610), 18610 states have call successors, (18610) [2022-11-03 02:52:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73048 states to 73048 states and 117094 transitions. [2022-11-03 02:52:23,815 INFO L78 Accepts]: Start accepts. Automaton has 73048 states and 117094 transitions. Word has length 106 [2022-11-03 02:52:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:23,815 INFO L495 AbstractCegarLoop]: Abstraction has 73048 states and 117094 transitions. [2022-11-03 02:52:23,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:52:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 73048 states and 117094 transitions. [2022-11-03 02:52:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 02:52:23,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:23,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:23,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:52:23,869 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1719036514, now seen corresponding path program 1 times [2022-11-03 02:52:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873095122] [2022-11-03 02:52:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:52:25,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:25,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873095122] [2022-11-03 02:52:25,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873095122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:25,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:25,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-03 02:52:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981634834] [2022-11-03 02:52:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:52:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:52:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:52:25,780 INFO L87 Difference]: Start difference. First operand 73048 states and 117094 transitions. Second operand has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-03 02:52:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:32,756 INFO L93 Difference]: Finished difference Result 73234 states and 117347 transitions. [2022-11-03 02:52:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:52:32,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 107 [2022-11-03 02:52:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:33,140 INFO L225 Difference]: With dead ends: 73234 [2022-11-03 02:52:33,140 INFO L226 Difference]: Without dead ends: 73230 [2022-11-03 02:52:33,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:52:33,168 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 457 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 3479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:33,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 3547 Invalid, 3479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3315 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:52:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73230 states. [2022-11-03 02:52:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73230 to 73222. [2022-11-03 02:52:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73222 states, 54506 states have (on average 1.4675448574468866) internal successors, (79990), 54513 states have internal predecessors, (79990), 18668 states have call successors, (18668), 47 states have call predecessors, (18668), 47 states have return successors, (18669), 18663 states have call predecessors, (18669), 18663 states have call successors, (18669) [2022-11-03 02:52:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73222 states to 73222 states and 117327 transitions. [2022-11-03 02:52:40,189 INFO L78 Accepts]: Start accepts. Automaton has 73222 states and 117327 transitions. Word has length 107 [2022-11-03 02:52:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:40,190 INFO L495 AbstractCegarLoop]: Abstraction has 73222 states and 117327 transitions. [2022-11-03 02:52:40,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-03 02:52:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 73222 states and 117327 transitions. [2022-11-03 02:52:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:52:40,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:40,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:40,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:52:40,264 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash -460765137, now seen corresponding path program 1 times [2022-11-03 02:52:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:40,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890561094] [2022-11-03 02:52:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:52:41,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:41,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890561094] [2022-11-03 02:52:41,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890561094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:41,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:41,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:52:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22041007] [2022-11-03 02:52:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:41,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:52:41,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:52:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:52:41,266 INFO L87 Difference]: Start difference. First operand 73222 states and 117327 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 10 states have internal predecessors, (65), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19)