./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS --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 5711b4c0ea669ac051f0ad97dbc3a1a473a1622b7d95c937325001ba5ca1073b --- 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-8393723 [2022-11-19 07:10:24,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:10:24,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:10:24,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:10:24,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:10:24,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:10:24,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:10:24,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:10:24,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:10:24,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:10:24,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:10:24,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:10:24,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:10:24,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:10:24,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:10:24,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:10:24,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:10:24,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:10:24,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:10:24,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:10:24,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:10:24,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:10:24,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:10:24,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:10:24,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:10:24,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:10:24,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:10:24,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:10:24,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:10:24,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:10:24,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:10:24,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:10:24,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:10:24,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:10:24,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:10:24,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:10:24,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:10:24,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:10:24,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:10:24,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:10:24,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:10:24,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:10:24,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:10:24,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:10:24,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:10:24,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:10:24,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:10:24,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:10:24,278 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:10:24,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:10:24,279 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:10:24,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:10:24,280 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:10:24,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:10:24,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:10:24,281 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:10:24,281 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:10:24,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:10:24,282 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:10:24,282 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:10:24,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:10:24,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:10:24,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:10:24,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:10:24,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:10:24,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:10:24,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:10:24,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:10:24,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:10:24,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:10:24,287 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:10:24,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:10:24,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:10:24,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:10:24,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:24,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:10:24,289 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:10:24,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:10:24,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:10:24,290 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:10:24,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:10:24,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:10:24,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:10:24,291 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_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5711b4c0ea669ac051f0ad97dbc3a1a473a1622b7d95c937325001ba5ca1073b [2022-11-19 07:10:24,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:10:24,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:10:24,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:10:24,659 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:10:24,660 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:10:24,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec4_product32.cil.c [2022-11-19 07:10:24,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/data/79df498a1/bfc0e27466d24132af6b763757e52463/FLAGc0a6ecc65 [2022-11-19 07:10:25,460 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:10:25,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/sv-benchmarks/c/product-lines/email_spec4_product32.cil.c [2022-11-19 07:10:25,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/data/79df498a1/bfc0e27466d24132af6b763757e52463/FLAGc0a6ecc65 [2022-11-19 07:10:25,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/data/79df498a1/bfc0e27466d24132af6b763757e52463 [2022-11-19 07:10:25,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:10:25,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:10:25,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:25,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:10:25,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:10:25,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:25" (1/1) ... [2022-11-19 07:10:25,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0180e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:25, skipping insertion in model container [2022-11-19 07:10:25,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:25" (1/1) ... [2022-11-19 07:10:25,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:10:25,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:10:26,285 WARN L234 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_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/sv-benchmarks/c/product-lines/email_spec4_product32.cil.c[32699,32712] [2022-11-19 07:10:26,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:26,520 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:10:26,565 WARN L234 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_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/sv-benchmarks/c/product-lines/email_spec4_product32.cil.c[32699,32712] [2022-11-19 07:10:26,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:26,673 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:10:26,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26 WrapperNode [2022-11-19 07:10:26,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:26,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:26,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:10:26,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:10:26,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,802 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 987 [2022-11-19 07:10:26,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:26,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:10:26,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:10:26,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:10:26,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:10:26,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:10:26,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:10:26,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:10:26,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (1/1) ... [2022-11-19 07:10:26,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:26,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:26,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:10:26,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:10:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:10:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:10:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 07:10:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 07:10:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:10:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:10:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 07:10:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 07:10:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:10:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:10:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:10:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:10:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:10:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:10:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:10:27,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:10:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:10:27,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:10:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:10:27,021 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:10:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:10:27,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:10:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:10:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:10:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:10:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:10:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:10:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:10:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:10:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:10:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:10:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:10:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:10:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:10:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:10:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:10:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 07:10:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 07:10:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:10:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:10:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:10:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:10:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:10:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:10:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:10:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:10:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:10:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:10:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:10:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:10:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:10:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:10:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:10:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:10:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:10:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:10:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:10:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 07:10:27,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 07:10:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:10:27,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:10:27,253 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:10:27,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:10:28,518 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:10:29,281 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:10:29,281 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:10:29,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:29 BoogieIcfgContainer [2022-11-19 07:10:29,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:10:29,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:10:29,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:10:29,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:10:29,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:10:25" (1/3) ... [2022-11-19 07:10:29,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a90caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:29, skipping insertion in model container [2022-11-19 07:10:29,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:26" (2/3) ... [2022-11-19 07:10:29,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a90caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:29, skipping insertion in model container [2022-11-19 07:10:29,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:29" (3/3) ... [2022-11-19 07:10:29,296 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product32.cil.c [2022-11-19 07:10:29,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:10:29,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:10:29,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:10:29,415 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;@7c57bb1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:10:29,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:10:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-19 07:10:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 07:10:29,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:29,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:29,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2130881634, now seen corresponding path program 1 times [2022-11-19 07:10:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:29,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091315764] [2022-11-19 07:10:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:29,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:10:29,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:29,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091315764] [2022-11-19 07:10:29,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091315764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:29,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:29,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:10:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351605153] [2022-11-19 07:10:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:10:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:10:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:10:29,972 INFO L87 Difference]: Start difference. First operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:10:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:30,201 INFO L93 Difference]: Finished difference Result 346 states and 455 transitions. [2022-11-19 07:10:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:10:30,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-11-19 07:10:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:30,218 INFO L225 Difference]: With dead ends: 346 [2022-11-19 07:10:30,218 INFO L226 Difference]: Without dead ends: 216 [2022-11-19 07:10:30,224 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 [2022-11-19 07:10:30,228 INFO L413 NwaCegarLoop]: 248 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, 248 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 [2022-11-19 07:10:30,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:10:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-19 07:10:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-19 07:10:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.278688524590164) internal successors, (156), 126 states have internal predecessors, (156), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-19 07:10:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2022-11-19 07:10:30,298 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 75 [2022-11-19 07:10:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:30,300 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2022-11-19 07:10:30,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:10:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2022-11-19 07:10:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 07:10:30,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:30,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:30,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:10:30,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash 93882337, now seen corresponding path program 1 times [2022-11-19 07:10:30,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:30,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099858075] [2022-11-19 07:10:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:30,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:10:30,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:30,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099858075] [2022-11-19 07:10:30,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099858075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:30,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:30,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:10:30,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585176836] [2022-11-19 07:10:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:30,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:10:30,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:10:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:10:30,597 INFO L87 Difference]: Start difference. First operand 216 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:10:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:30,799 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2022-11-19 07:10:30,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:10:30,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-11-19 07:10:30,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:30,809 INFO L225 Difference]: With dead ends: 342 [2022-11-19 07:10:30,809 INFO L226 Difference]: Without dead ends: 218 [2022-11-19 07:10:30,818 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 [2022-11-19 07:10:30,819 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 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 [2022-11-19 07:10:30,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:10:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-19 07:10:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-19 07:10:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-19 07:10:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 287 transitions. [2022-11-19 07:10:30,861 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 287 transitions. Word has length 76 [2022-11-19 07:10:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:30,863 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 287 transitions. [2022-11-19 07:10:30,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:10:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 287 transitions. [2022-11-19 07:10:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 07:10:30,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:30,875 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] [2022-11-19 07:10:30,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:10:30,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:30,876 INFO L85 PathProgramCache]: Analyzing trace with hash -467088619, now seen corresponding path program 1 times [2022-11-19 07:10:30,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:30,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003935458] [2022-11-19 07:10:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:30,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:10:31,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:31,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003935458] [2022-11-19 07:10:31,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003935458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:31,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:31,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:10:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722593916] [2022-11-19 07:10:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:31,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:10:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:10:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:10:31,097 INFO L87 Difference]: Start difference. First operand 218 states and 287 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:10:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:31,325 INFO L93 Difference]: Finished difference Result 471 states and 641 transitions. [2022-11-19 07:10:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:10:31,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-19 07:10:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:31,329 INFO L225 Difference]: With dead ends: 471 [2022-11-19 07:10:31,330 INFO L226 Difference]: Without dead ends: 271 [2022-11-19 07:10:31,333 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 [2022-11-19 07:10:31,338 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 59 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:31,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 507 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:10:31,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-19 07:10:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2022-11-19 07:10:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 162 states have internal predecessors, (213), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-19 07:10:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2022-11-19 07:10:31,387 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 81 [2022-11-19 07:10:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:31,389 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2022-11-19 07:10:31,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:10:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2022-11-19 07:10:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 07:10:31,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:31,394 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] [2022-11-19 07:10:31,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:10:31,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1314703793, now seen corresponding path program 1 times [2022-11-19 07:10:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:31,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445840038] [2022-11-19 07:10:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:10:31,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445840038] [2022-11-19 07:10:31,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445840038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:10:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247885226] [2022-11-19 07:10:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:31,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:31,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:31,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:10:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:32,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:10:32,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:10:32,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:10:32,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247885226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1984201581] [2022-11-19 07:10:32,395 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-19 07:10:32,400 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:10:32,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:10:32,411 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:10:32,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:11:07,638 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:11:08,007 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 265 for LOIs [2022-11-19 07:11:10,558 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-19 07:11:10,619 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:11:11,049 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-11-19 07:11:15,538 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 275 for LOIs [2022-11-19 07:11:26,571 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:11:27,221 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 247 for LOIs [2022-11-19 07:11:27,300 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-11-19 07:11:27,351 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-19 07:11:32,902 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 249 for LOIs [2022-11-19 07:11:32,948 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 252 for LOIs [2022-11-19 07:11:32,999 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:11:42,388 WARN L233 SmtUtils]: Spent 9.33s on a formula simplification. DAG size of input: 552 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:00,899 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:28,180 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 498 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:36,918 WARN L233 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 508 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:48,568 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 563 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:16,590 WARN L233 SmtUtils]: Spent 13.07s on a formula simplification. DAG size of input: 473 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:23,297 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 495 DAG size of output: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:43,099 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 450 DAG size of output: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:49,237 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:38,630 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 545 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:52,032 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 552 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:00,249 WARN L233 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 555 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:00,256 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3729#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (<= |old(~__ste_email_isEncrypted1~0)| 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_~tmp~12#1| 2) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~11#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= ~__ste_Client_counter~0 0) (<= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~pubkey~0#1|) (<= 0 ~__ste_Client_AddressBook2_Alias2~0) (<= ~__ste_client_forwardReceiver0~0 0) (<= 0 ~__ste_Client_Keyring2_PublicKey1~0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= 0 ~__ste_email_subject0~0.base) (<= ~__ste_email_subject1~0.offset 0) (<= ~__ste_Client_AddressBook2_Alias0~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= 0 ~__ste_Client_AddressBook1_Address1~0) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (<= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey2~0) (<= 0 ~__ste_ClientAddressBook_size0~0) (<= 2 ~rjh~0) (<= 0 ~__SELECTED_FEATURE_Encrypt~0) (<= 0 ~__ste_client_autoResponse1~0) (<= 0 ~__ste_client_outbuffer0~0) (<= |old(~queued_client~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= ~chuck~0 3) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= 0 ~__ste_client_outbuffer1~0) (<= 0 ~__ste_ClientAddressBook_size1~0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~18#1| 2147483647) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#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_client_name0~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Alias1~0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= 0 ~__ste_Client_Keyring0_User0~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (<= 0 ~__SELECTED_FEATURE_AutoResponder~0) (= ~__ste_email_body0~0.offset 0) (<= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 ~__ste_email_isSigned1~0) (<= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#1| 1) (<= ~__ste_Client_Keyring1_PublicKey0~0 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) (<= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~5#1| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (<= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_email_id0~0 0) (<= 0 ~__ste_client_name2~0.offset) (= ~head~0.offset 0) (<= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~__ste_Client_AddressBook2_Alias1~0 0) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_Email_counter~0 0) (<= ~__ste_email_subject0~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~18#1| 2147483648)) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_subject1~0.offset) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (<= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~12#1|) (<= 0 ~__ste_email_id1~0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (<= ~__ste_client_autoResponse0~0 0) (= ~__ste_client_privateKey0~0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~21#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= 0 ~__ste_Client_Keyring2_PublicKey0~0) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= ~__ste_ClientAddressBook_size0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_client_name0~0.base) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (<= 0 ~__ste_Client_Keyring1_PublicKey1~0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (<= 0 ~queued_client~0) (<= 0 ~__ste_client_forwardReceiver0~0) (<= 0 ~__SELECTED_FEATURE_Keys~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey0~0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= |old(~queue_empty~0)| 1) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~9#1| 0)) (<= ~__ste_client_outbuffer0~0 0) (<= ~head~0.base 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~21#1| 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= ~__ste_client_name0~0.offset 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= ~rjh~0 2) (<= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 ~__ste_Client_AddressBook2_Alias0~0) (<= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (<= 0 ~__ste_Client_Keyring2_PublicKey2~0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 0 ~__GUIDSL_NON_TERMINAL_main~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= 3 ~chuck~0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (<= ~__ste_client_outbuffer1~0 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~5#1|) (<= ~__ste_ClientAddressBook_size1~0 0) (<= 0 ~__ste_client_name1~0.base) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~11#1| 2147483648)) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-11-19 07:15:00,257 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:15:00,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:15:00,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-19 07:15:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153123781] [2022-11-19 07:15:00,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:15:00,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:15:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:15:00,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-11-19 07:15:00,262 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:15:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:00,678 INFO L93 Difference]: Finished difference Result 665 states and 990 transitions. [2022-11-19 07:15:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:15:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 82 [2022-11-19 07:15:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:00,688 INFO L225 Difference]: With dead ends: 665 [2022-11-19 07:15:00,689 INFO L226 Difference]: Without dead ends: 541 [2022-11-19 07:15:00,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 207.2s TimeCoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-11-19 07:15:00,696 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 319 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:00,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 800 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:15:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-19 07:15:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 526. [2022-11-19 07:15:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 339 states have (on average 1.471976401179941) internal successors, (499), 343 states have internal predecessors, (499), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 156 states have call predecessors, (157), 157 states have call successors, (157) [2022-11-19 07:15:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 814 transitions. [2022-11-19 07:15:00,760 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 814 transitions. Word has length 82 [2022-11-19 07:15:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:00,761 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 814 transitions. [2022-11-19 07:15:00,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:15:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 814 transitions. [2022-11-19 07:15:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 07:15:00,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:00,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:00,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:00,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee1ad3-6dda-407d-a039-c84d4e99b6ae/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:00,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:00,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1668059127, now seen corresponding path program 1 times [2022-11-19 07:15:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:00,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447201835] [2022-11-19 07:15:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:01,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:01,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447201835] [2022-11-19 07:15:01,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447201835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:01,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:01,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405948240] [2022-11-19 07:15:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:01,113 INFO L87 Difference]: Start difference. First operand 526 states and 814 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:01,290 INFO L93 Difference]: Finished difference Result 1282 states and 2026 transitions. [2022-11-19 07:15:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:01,291 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2022-11-19 07:15:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:01,296 INFO L225 Difference]: With dead ends: 1282 [2022-11-19 07:15:01,296 INFO L226 Difference]: Without dead ends: 788 [2022-11-19 07:15:01,299 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 [2022-11-19 07:15:01,300 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 57 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 512 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 [2022-11-19 07:15:01,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 512 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-19 07:15:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 783. [2022-11-19 07:15:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 517 states have (on average 1.493230174081238) internal successors, (772), 521 states have internal predecessors, (772), 237 states have call successors, (237), 28 states have call predecessors, (237), 28 states have return successors, (236), 235 states have call predecessors, (236), 236 states have call successors, (236) [2022-11-19 07:15:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1245 transitions. [2022-11-19 07:15:01,351 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1245 transitions. Word has length 88 [2022-11-19 07:15:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:01,351 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1245 transitions. [2022-11-19 07:15:01,352 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1245 transitions. [2022-11-19 07:15:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:15:01,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:01,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:01,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:15:01,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:01,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash -125045430, now seen corresponding path program 1 times [2022-11-19 07:15:01,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:01,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152797198] [2022-11-19 07:15:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:01,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:01,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:01,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152797198] [2022-11-19 07:15:01,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152797198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:01,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:01,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:01,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391525492] [2022-11-19 07:15:01,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:01,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:01,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:01,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:01,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:01,454 INFO L87 Difference]: Start difference. First operand 783 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:01,663 INFO L93 Difference]: Finished difference Result 1904 states and 3073 transitions. [2022-11-19 07:15:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2022-11-19 07:15:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:01,673 INFO L225 Difference]: With dead ends: 1904 [2022-11-19 07:15:01,673 INFO L226 Difference]: Without dead ends: 1183 [2022-11-19 07:15:01,677 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 [2022-11-19 07:15:01,679 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 55 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 500 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 [2022-11-19 07:15:01,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 500 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-11-19 07:15:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1178. [2022-11-19 07:15:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 793 states have (on average 1.5031525851197982) internal successors, (1192), 797 states have internal predecessors, (1192), 356 states have call successors, (356), 28 states have call predecessors, (356), 28 states have return successors, (355), 354 states have call predecessors, (355), 355 states have call successors, (355) [2022-11-19 07:15:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1903 transitions. [2022-11-19 07:15:01,818 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1903 transitions. Word has length 89 [2022-11-19 07:15:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:01,818 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1903 transitions. [2022-11-19 07:15:01,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1903 transitions. [2022-11-19 07:15:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:15:01,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:01,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:01,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:15:01,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:01,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1497760795, now seen corresponding path program 1 times [2022-11-19 07:15:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:01,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019803005] [2022-11-19 07:15:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:01,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:01,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:01,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019803005] [2022-11-19 07:15:01,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019803005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:01,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:01,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:01,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008996806] [2022-11-19 07:15:01,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:01,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:01,966 INFO L87 Difference]: Start difference. First operand 1178 states and 1903 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:02,221 INFO L93 Difference]: Finished difference Result 2807 states and 4585 transitions. [2022-11-19 07:15:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:02,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2022-11-19 07:15:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:02,236 INFO L225 Difference]: With dead ends: 2807 [2022-11-19 07:15:02,237 INFO L226 Difference]: Without dead ends: 1771 [2022-11-19 07:15:02,241 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 [2022-11-19 07:15:02,243 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 53 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 497 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 [2022-11-19 07:15:02,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 497 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-11-19 07:15:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1766. [2022-11-19 07:15:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1219 states have (on average 1.509433962264151) internal successors, (1840), 1223 states have internal predecessors, (1840), 518 states have call successors, (518), 28 states have call predecessors, (518), 28 states have return successors, (517), 516 states have call predecessors, (517), 517 states have call successors, (517) [2022-11-19 07:15:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2875 transitions. [2022-11-19 07:15:02,394 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2875 transitions. Word has length 90 [2022-11-19 07:15:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:02,394 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2875 transitions. [2022-11-19 07:15:02,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2875 transitions. [2022-11-19 07:15:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 07:15:02,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:02,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:02,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:15:02,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 560403497, now seen corresponding path program 1 times [2022-11-19 07:15:02,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:02,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334774109] [2022-11-19 07:15:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:02,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:02,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334774109] [2022-11-19 07:15:02,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334774109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:02,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:02,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951277470] [2022-11-19 07:15:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:02,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:02,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:02,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:02,551 INFO L87 Difference]: Start difference. First operand 1766 states and 2875 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:02,860 INFO L93 Difference]: Finished difference Result 4192 states and 6893 transitions. [2022-11-19 07:15:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:02,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 91 [2022-11-19 07:15:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:02,881 INFO L225 Difference]: With dead ends: 4192 [2022-11-19 07:15:02,881 INFO L226 Difference]: Without dead ends: 2705 [2022-11-19 07:15:02,888 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 [2022-11-19 07:15:02,889 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 51 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 495 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 [2022-11-19 07:15:02,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 495 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-11-19 07:15:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2700. [2022-11-19 07:15:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 1908 states have (on average 1.5125786163522013) internal successors, (2886), 1912 states have internal predecessors, (2886), 763 states have call successors, (763), 28 states have call predecessors, (763), 28 states have return successors, (762), 761 states have call predecessors, (762), 762 states have call successors, (762) [2022-11-19 07:15:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 4411 transitions. [2022-11-19 07:15:03,194 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 4411 transitions. Word has length 91 [2022-11-19 07:15:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:03,195 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 4411 transitions. [2022-11-19 07:15:03,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 4411 transitions. [2022-11-19 07:15:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 07:15:03,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:03,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:03,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:15:03,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:03,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash -134232001, now seen corresponding path program 1 times [2022-11-19 07:15:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:03,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694008400] [2022-11-19 07:15:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:03,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:03,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:03,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694008400] [2022-11-19 07:15:03,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694008400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:03,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:03,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168573813] [2022-11-19 07:15:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:03,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:03,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:03,322 INFO L87 Difference]: Start difference. First operand 2700 states and 4411 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:03,749 INFO L93 Difference]: Finished difference Result 6708 states and 11053 transitions. [2022-11-19 07:15:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:03,750 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-11-19 07:15:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:03,782 INFO L225 Difference]: With dead ends: 6708 [2022-11-19 07:15:03,782 INFO L226 Difference]: Without dead ends: 4430 [2022-11-19 07:15:03,793 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 [2022-11-19 07:15:03,796 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 49 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 506 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 [2022-11-19 07:15:03,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 506 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2022-11-19 07:15:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4425. [2022-11-19 07:15:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 3140 states have (on average 1.5028662420382166) internal successors, (4719), 3144 states have internal predecessors, (4719), 1256 states have call successors, (1256), 28 states have call predecessors, (1256), 28 states have return successors, (1255), 1254 states have call predecessors, (1255), 1255 states have call successors, (1255) [2022-11-19 07:15:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 7230 transitions. [2022-11-19 07:15:04,269 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 7230 transitions. Word has length 92 [2022-11-19 07:15:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:04,269 INFO L495 AbstractCegarLoop]: Abstraction has 4425 states and 7230 transitions. [2022-11-19 07:15:04,269 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 7230 transitions. [2022-11-19 07:15:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:15:04,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:04,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:04,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:15:04,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash -663619579, now seen corresponding path program 1 times [2022-11-19 07:15:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:04,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120942057] [2022-11-19 07:15:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:04,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:04,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:04,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120942057] [2022-11-19 07:15:04,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120942057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:04,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:04,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:04,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298728445] [2022-11-19 07:15:04,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:04,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:04,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:04,387 INFO L87 Difference]: Start difference. First operand 4425 states and 7230 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:04,920 INFO L93 Difference]: Finished difference Result 11124 states and 18338 transitions. [2022-11-19 07:15:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:04,921 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-11-19 07:15:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:04,963 INFO L225 Difference]: With dead ends: 11124 [2022-11-19 07:15:04,963 INFO L226 Difference]: Without dead ends: 7387 [2022-11-19 07:15:04,977 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 [2022-11-19 07:15:04,978 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 47 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 502 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 [2022-11-19 07:15:04,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 502 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2022-11-19 07:15:05,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 7382. [2022-11-19 07:15:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7382 states, 5275 states have (on average 1.498388625592417) internal successors, (7904), 5279 states have internal predecessors, (7904), 2078 states have call successors, (2078), 28 states have call predecessors, (2078), 28 states have return successors, (2077), 2076 states have call predecessors, (2077), 2077 states have call successors, (2077) [2022-11-19 07:15:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 12059 transitions. [2022-11-19 07:15:05,664 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 12059 transitions. Word has length 93 [2022-11-19 07:15:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:05,665 INFO L495 AbstractCegarLoop]: Abstraction has 7382 states and 12059 transitions. [2022-11-19 07:15:05,666 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 12059 transitions. [2022-11-19 07:15:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:15:05,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:05,689 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:15:05,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:05,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1610140893, now seen corresponding path program 1 times [2022-11-19 07:15:05,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:05,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147756286] [2022-11-19 07:15:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:05,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:05,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147756286] [2022-11-19 07:15:05,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147756286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:05,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:05,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675995981] [2022-11-19 07:15:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:05,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:05,829 INFO L87 Difference]: Start difference. First operand 7382 states and 12059 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:06,882 INFO L93 Difference]: Finished difference Result 18591 states and 30600 transitions. [2022-11-19 07:15:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:06,883 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-11-19 07:15:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:06,965 INFO L225 Difference]: With dead ends: 18591 [2022-11-19 07:15:06,965 INFO L226 Difference]: Without dead ends: 12331 [2022-11-19 07:15:06,985 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 [2022-11-19 07:15:06,986 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 45 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 498 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 [2022-11-19 07:15:06,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 498 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2022-11-19 07:15:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12326. [2022-11-19 07:15:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12326 states, 9016 states have (on average 1.5001109139307898) internal successors, (13525), 9020 states have internal predecessors, (13525), 3281 states have call successors, (3281), 28 states have call predecessors, (3281), 28 states have return successors, (3280), 3279 states have call predecessors, (3280), 3280 states have call successors, (3280) [2022-11-19 07:15:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12326 states to 12326 states and 20086 transitions. [2022-11-19 07:15:07,976 INFO L78 Accepts]: Start accepts. Automaton has 12326 states and 20086 transitions. Word has length 94 [2022-11-19 07:15:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:07,977 INFO L495 AbstractCegarLoop]: Abstraction has 12326 states and 20086 transitions. [2022-11-19 07:15:07,977 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12326 states and 20086 transitions. [2022-11-19 07:15:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 07:15:08,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:08,002 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:08,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:15:08,002 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:08,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash 999034692, now seen corresponding path program 1 times [2022-11-19 07:15:08,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:08,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995671412] [2022-11-19 07:15:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:08,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:08,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995671412] [2022-11-19 07:15:08,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995671412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:08,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:08,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:08,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809552191] [2022-11-19 07:15:08,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:08,092 INFO L87 Difference]: Start difference. First operand 12326 states and 20086 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:09,917 INFO L93 Difference]: Finished difference Result 32595 states and 53462 transitions. [2022-11-19 07:15:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:09,917 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2022-11-19 07:15:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:10,024 INFO L225 Difference]: With dead ends: 32595 [2022-11-19 07:15:10,025 INFO L226 Difference]: Without dead ends: 21843 [2022-11-19 07:15:10,069 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 [2022-11-19 07:15:10,070 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 43 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 500 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 [2022-11-19 07:15:10,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 500 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21843 states. [2022-11-19 07:15:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21843 to 21838. [2022-11-19 07:15:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21838 states, 16078 states have (on average 1.4925985819131733) internal successors, (23998), 16082 states have internal predecessors, (23998), 5731 states have call successors, (5731), 28 states have call predecessors, (5731), 28 states have return successors, (5730), 5729 states have call predecessors, (5730), 5730 states have call successors, (5730) [2022-11-19 07:15:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21838 states to 21838 states and 35459 transitions. [2022-11-19 07:15:12,373 INFO L78 Accepts]: Start accepts. Automaton has 21838 states and 35459 transitions. Word has length 95 [2022-11-19 07:15:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:12,375 INFO L495 AbstractCegarLoop]: Abstraction has 21838 states and 35459 transitions. [2022-11-19 07:15:12,376 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 21838 states and 35459 transitions. [2022-11-19 07:15:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:15:12,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:12,412 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:12,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:15:12,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:12,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1795387747, now seen corresponding path program 1 times [2022-11-19 07:15:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:12,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483780545] [2022-11-19 07:15:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:12,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483780545] [2022-11-19 07:15:12,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483780545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:12,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:12,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:12,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372779688] [2022-11-19 07:15:12,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:12,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:12,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:12,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:12,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:12,524 INFO L87 Difference]: Start difference. First operand 21838 states and 35459 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:16,089 INFO L93 Difference]: Finished difference Result 59282 states and 96714 transitions. [2022-11-19 07:15:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:16,091 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2022-11-19 07:15:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:16,295 INFO L225 Difference]: With dead ends: 59282 [2022-11-19 07:15:16,295 INFO L226 Difference]: Without dead ends: 39613 [2022-11-19 07:15:16,352 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 [2022-11-19 07:15:16,353 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 41 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 502 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 [2022-11-19 07:15:16,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 502 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39613 states. [2022-11-19 07:15:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39613 to 39608. [2022-11-19 07:15:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39608 states, 29335 states have (on average 1.4819839781830577) internal successors, (43474), 29339 states have internal predecessors, (43474), 10244 states have call successors, (10244), 28 states have call predecessors, (10244), 28 states have return successors, (10243), 10242 states have call predecessors, (10243), 10243 states have call successors, (10243) [2022-11-19 07:15:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39608 states to 39608 states and 63961 transitions. [2022-11-19 07:15:20,511 INFO L78 Accepts]: Start accepts. Automaton has 39608 states and 63961 transitions. Word has length 96 [2022-11-19 07:15:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:20,512 INFO L495 AbstractCegarLoop]: Abstraction has 39608 states and 63961 transitions. [2022-11-19 07:15:20,513 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 39608 states and 63961 transitions. [2022-11-19 07:15:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 07:15:20,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:20,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:20,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:15:20,566 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:20,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash -121685820, now seen corresponding path program 1 times [2022-11-19 07:15:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:20,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556227066] [2022-11-19 07:15:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:20,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556227066] [2022-11-19 07:15:20,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556227066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:20,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:20,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:20,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079189230] [2022-11-19 07:15:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:20,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:20,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:20,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:20,702 INFO L87 Difference]: Start difference. First operand 39608 states and 63961 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:26,107 INFO L93 Difference]: Finished difference Result 73180 states and 118349 transitions. [2022-11-19 07:15:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:26,107 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-11-19 07:15:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:26,493 INFO L225 Difference]: With dead ends: 73180 [2022-11-19 07:15:26,493 INFO L226 Difference]: Without dead ends: 73056 [2022-11-19 07:15:26,527 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 [2022-11-19 07:15:26,528 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 39 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 502 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 [2022-11-19 07:15:26,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 502 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73056 states. [2022-11-19 07:15:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73056 to 73051. [2022-11-19 07:15:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73051 states, 54410 states have (on average 1.4680389634258408) internal successors, (79876), 54414 states have internal predecessors, (79876), 18612 states have call successors, (18612), 28 states have call predecessors, (18612), 28 states have return successors, (18611), 18610 states have call predecessors, (18611), 18611 states have call successors, (18611) [2022-11-19 07:15:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73051 states to 73051 states and 117099 transitions. [2022-11-19 07:15:31,733 INFO L78 Accepts]: Start accepts. Automaton has 73051 states and 117099 transitions. Word has length 97 [2022-11-19 07:15:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:31,733 INFO L495 AbstractCegarLoop]: Abstraction has 73051 states and 117099 transitions. [2022-11-19 07:15:31,734 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 73051 states and 117099 transitions. [2022-11-19 07:15:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-19 07:15:32,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:32,020 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:32,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:15:32,020 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1501732444, now seen corresponding path program 1 times [2022-11-19 07:15:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:32,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656700619] [2022-11-19 07:15:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:15:34,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:34,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656700619] [2022-11-19 07:15:34,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656700619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:34,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:34,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-19 07:15:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698511623] [2022-11-19 07:15:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:34,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 07:15:34,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 07:15:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:15:34,355 INFO L87 Difference]: Start difference. First operand 73051 states and 117099 transitions. Second operand has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-19 07:15:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:41,509 INFO L93 Difference]: Finished difference Result 73215 states and 117348 transitions. [2022-11-19 07:15:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:15:41,509 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 98 [2022-11-19 07:15:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:42,130 INFO L225 Difference]: With dead ends: 73215 [2022-11-19 07:15:42,131 INFO L226 Difference]: Without dead ends: 73211 [2022-11-19 07:15:42,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:15:42,167 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 493 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:42,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 3928 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 2798 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:15:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73211 states.