./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur --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 fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 --- 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-38b53e6 [2022-11-25 22:30:18,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:30:18,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:30:18,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:30:18,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:30:18,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:30:18,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:30:18,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:30:18,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:30:18,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:30:18,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:30:18,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:30:18,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:30:18,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:30:18,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:30:18,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:30:18,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:30:18,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:30:18,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:30:18,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:30:18,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:30:18,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:30:18,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:30:18,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:30:18,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:30:18,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:30:18,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:30:18,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:30:18,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:30:18,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:30:18,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:30:18,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:30:18,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:30:18,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:30:18,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:30:18,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:30:18,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:30:18,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:30:18,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:30:18,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:30:18,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:30:18,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:30:18,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:30:18,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:30:18,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:30:18,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:30:18,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:30:18,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:30:18,287 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:30:18,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:30:18,287 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:30:18,287 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:30:18,288 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:30:18,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:30:18,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:30:18,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:30:18,289 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:30:18,289 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:30:18,289 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:30:18,289 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:30:18,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:30:18,290 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:30:18,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:30:18,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:30:18,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:30:18,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:30:18,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:30:18,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:30:18,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:30:18,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:30:18,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:30:18,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:30:18,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:30:18,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:30:18,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:30:18,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:30:18,294 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:30:18,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:30:18,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:30:18,295 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:30:18,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:30:18,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:30:18,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:30:18,296 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_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 [2022-11-25 22:30:18,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:30:18,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:30:18,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:30:18,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:30:18,596 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:30:18,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-11-25 22:30:21,810 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:30:22,204 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:30:22,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-11-25 22:30:22,226 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/data/aac121fd0/1e1b786825d847e98652a5ff080d85e0/FLAG1f7670acb [2022-11-25 22:30:22,249 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/data/aac121fd0/1e1b786825d847e98652a5ff080d85e0 [2022-11-25 22:30:22,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:30:22,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:30:22,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:30:22,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:30:22,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:30:22,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:30:22" (1/1) ... [2022-11-25 22:30:22,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b9d1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:22, skipping insertion in model container [2022-11-25 22:30:22,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:30:22" (1/1) ... [2022-11-25 22:30:22,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:30:22,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:30:22,575 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-11-25 22:30:22,778 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:22,887 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:22,903 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:22,911 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:22,923 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:22,959 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:22,967 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,003 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,006 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,009 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:30:23,068 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:30:23,107 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-11-25 22:30:23,139 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,150 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,152 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,153 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,155 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,162 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,163 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,167 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,169 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,171 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:30:23,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:30:23,264 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:30:23,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23 WrapperNode [2022-11-25 22:30:23,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:30:23,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:30:23,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:30:23,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:30:23,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,408 INFO L138 Inliner]: procedures = 151, calls = 284, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1304 [2022-11-25 22:30:23,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:30:23,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:30:23,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:30:23,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:30:23,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:30:23,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:30:23,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:30:23,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:30:23,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (1/1) ... [2022-11-25 22:30:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:30:23,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:23,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:30:23,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:30:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-25 22:30:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-25 22:30:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-25 22:30:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-25 22:30:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-25 22:30:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-25 22:30:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-25 22:30:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-25 22:30:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-25 22:30:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-25 22:30:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-25 22:30:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-25 22:30:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-25 22:30:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-25 22:30:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-25 22:30:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-25 22:30:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 22:30:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 22:30:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-25 22:30:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-25 22:30:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 22:30:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 22:30:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 22:30:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 22:30:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 22:30:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 22:30:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-25 22:30:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-25 22:30:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-25 22:30:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-25 22:30:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-25 22:30:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-25 22:30:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 22:30:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 22:30:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 22:30:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 22:30:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 22:30:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-25 22:30:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-25 22:30:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 22:30:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 22:30:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-25 22:30:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-25 22:30:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 22:30:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 22:30:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-25 22:30:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-25 22:30:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:30:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 22:30:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 22:30:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 22:30:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 22:30:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-25 22:30:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-25 22:30:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-25 22:30:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-25 22:30:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-25 22:30:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-25 22:30:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-25 22:30:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-25 22:30:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 22:30:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 22:30:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 22:30:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 22:30:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 22:30:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 22:30:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-25 22:30:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-25 22:30:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-25 22:30:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-25 22:30:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 22:30:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 22:30:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-25 22:30:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-25 22:30:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-25 22:30:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-25 22:30:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-25 22:30:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-25 22:30:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 22:30:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 22:30:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 22:30:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 22:30:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:30:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 22:30:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 22:30:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-25 22:30:23,650 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-25 22:30:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-25 22:30:23,654 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-25 22:30:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-25 22:30:23,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-25 22:30:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:30:23,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:30:24,021 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:30:24,028 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:30:25,343 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:30:26,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:30:26,152 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:30:26,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:26 BoogieIcfgContainer [2022-11-25 22:30:26,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:30:26,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:30:26,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:30:26,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:30:26,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:30:22" (1/3) ... [2022-11-25 22:30:26,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c170ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:26, skipping insertion in model container [2022-11-25 22:30:26,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:23" (2/3) ... [2022-11-25 22:30:26,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c170ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:26, skipping insertion in model container [2022-11-25 22:30:26,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:26" (3/3) ... [2022-11-25 22:30:26,171 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_productSimulator.cil.c [2022-11-25 22:30:26,196 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:30:26,196 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:30:26,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:30:26,308 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;@10490bbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:30:26,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:30:26,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-25 22:30:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 22:30:26,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:26,352 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:26,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2020671514, now seen corresponding path program 1 times [2022-11-25 22:30:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:26,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404641259] [2022-11-25 22:30:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:30:27,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:27,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404641259] [2022-11-25 22:30:27,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404641259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:27,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:27,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:30:27,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831522076] [2022-11-25 22:30:27,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:27,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:27,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:27,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:27,230 INFO L87 Difference]: Start difference. First operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 22:30:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:27,695 INFO L93 Difference]: Finished difference Result 742 states and 1022 transitions. [2022-11-25 22:30:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:30:27,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-11-25 22:30:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:27,713 INFO L225 Difference]: With dead ends: 742 [2022-11-25 22:30:27,714 INFO L226 Difference]: Without dead ends: 382 [2022-11-25 22:30:27,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:30:27,723 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 6 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:27,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1401 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:30:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-25 22:30:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-25 22:30:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 225 states have (on average 1.288888888888889) internal successors, (290), 244 states have internal predecessors, (290), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-25 22:30:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 513 transitions. [2022-11-25 22:30:27,821 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 513 transitions. Word has length 121 [2022-11-25 22:30:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:27,823 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 513 transitions. [2022-11-25 22:30:27,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 22:30:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 513 transitions. [2022-11-25 22:30:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 22:30:27,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:27,830 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:27,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:30:27,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash -484212045, now seen corresponding path program 1 times [2022-11-25 22:30:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:27,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803144227] [2022-11-25 22:30:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:30:28,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:28,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803144227] [2022-11-25 22:30:28,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803144227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:28,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:28,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:28,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839344433] [2022-11-25 22:30:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:28,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:28,059 INFO L87 Difference]: Start difference. First operand 382 states and 513 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-25 22:30:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:28,261 INFO L93 Difference]: Finished difference Result 735 states and 995 transitions. [2022-11-25 22:30:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:28,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 127 [2022-11-25 22:30:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:28,272 INFO L225 Difference]: With dead ends: 735 [2022-11-25 22:30:28,272 INFO L226 Difference]: Without dead ends: 382 [2022-11-25 22:30:28,279 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 [2022-11-25 22:30:28,282 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 478 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:28,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 470 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-25 22:30:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-25 22:30:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 243 states have internal predecessors, (288), 110 states have call successors, (110), 45 states have call predecessors, (110), 45 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-25 22:30:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2022-11-25 22:30:28,337 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 127 [2022-11-25 22:30:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:28,337 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2022-11-25 22:30:28,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-25 22:30:28,338 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2022-11-25 22:30:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-25 22:30:28,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:28,341 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:28,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:30:28,341 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:28,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2138652357, now seen corresponding path program 1 times [2022-11-25 22:30:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:28,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250199322] [2022-11-25 22:30:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:28,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:30:28,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:28,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250199322] [2022-11-25 22:30:28,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250199322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:28,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:28,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:28,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991248657] [2022-11-25 22:30:28,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:28,650 INFO L87 Difference]: Start difference. First operand 382 states and 507 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:30:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:28,978 INFO L93 Difference]: Finished difference Result 1076 states and 1451 transitions. [2022-11-25 22:30:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2022-11-25 22:30:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:28,987 INFO L225 Difference]: With dead ends: 1076 [2022-11-25 22:30:28,987 INFO L226 Difference]: Without dead ends: 723 [2022-11-25 22:30:28,991 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 [2022-11-25 22:30:28,997 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 479 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:28,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 986 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:30:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-25 22:30:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2022-11-25 22:30:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 426 states have (on average 1.272300469483568) internal successors, (542), 456 states have internal predecessors, (542), 205 states have call successors, (205), 89 states have call predecessors, (205), 89 states have return successors, (216), 202 states have call predecessors, (216), 203 states have call successors, (216) [2022-11-25 22:30:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 963 transitions. [2022-11-25 22:30:29,070 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 963 transitions. Word has length 140 [2022-11-25 22:30:29,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 963 transitions. [2022-11-25 22:30:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 22:30:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 963 transitions. [2022-11-25 22:30:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-25 22:30:29,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:29,075 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:29,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:30:29,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:29,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash -935937360, now seen corresponding path program 1 times [2022-11-25 22:30:29,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:29,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269793481] [2022-11-25 22:30:29,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:29,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:30:29,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:29,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269793481] [2022-11-25 22:30:29,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269793481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:29,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:29,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:29,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201950578] [2022-11-25 22:30:29,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:29,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:29,245 INFO L87 Difference]: Start difference. First operand 721 states and 963 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 22:30:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:29,391 INFO L93 Difference]: Finished difference Result 723 states and 964 transitions. [2022-11-25 22:30:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:29,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-11-25 22:30:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:29,395 INFO L225 Difference]: With dead ends: 723 [2022-11-25 22:30:29,395 INFO L226 Difference]: Without dead ends: 382 [2022-11-25 22:30:29,396 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 [2022-11-25 22:30:29,401 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 459 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:29,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 473 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-25 22:30:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-25 22:30:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 227 states have (on average 1.2555066079295154) internal successors, (285), 242 states have internal predecessors, (285), 108 states have call successors, (108), 46 states have call predecessors, (108), 46 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-25 22:30:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 500 transitions. [2022-11-25 22:30:29,434 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 500 transitions. Word has length 146 [2022-11-25 22:30:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:29,434 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 500 transitions. [2022-11-25 22:30:29,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 22:30:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 500 transitions. [2022-11-25 22:30:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-25 22:30:29,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:29,441 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:29,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:30:29,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2062767192, now seen corresponding path program 1 times [2022-11-25 22:30:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:29,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109248598] [2022-11-25 22:30:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:29,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 22:30:29,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:29,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109248598] [2022-11-25 22:30:29,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109248598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:29,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:29,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656556315] [2022-11-25 22:30:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:29,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:29,558 INFO L87 Difference]: Start difference. First operand 382 states and 500 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 22:30:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:29,721 INFO L93 Difference]: Finished difference Result 725 states and 947 transitions. [2022-11-25 22:30:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-11-25 22:30:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:29,726 INFO L225 Difference]: With dead ends: 725 [2022-11-25 22:30:29,726 INFO L226 Difference]: Without dead ends: 385 [2022-11-25 22:30:29,728 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 [2022-11-25 22:30:29,731 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 442 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:29,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 458 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-25 22:30:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 379. [2022-11-25 22:30:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 237 states have internal predecessors, (274), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-25 22:30:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2022-11-25 22:30:29,772 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 146 [2022-11-25 22:30:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:29,775 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2022-11-25 22:30:29,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 22:30:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2022-11-25 22:30:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 22:30:29,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:29,779 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:29,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:30:29,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1683507357, now seen corresponding path program 1 times [2022-11-25 22:30:29,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:29,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868490914] [2022-11-25 22:30:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:29,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 22:30:30,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:30,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868490914] [2022-11-25 22:30:30,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868490914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:30,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:30,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979718934] [2022-11-25 22:30:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:30,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:30,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:30,060 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 22:30:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:30,228 INFO L93 Difference]: Finished difference Result 601 states and 760 transitions. [2022-11-25 22:30:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:30,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 163 [2022-11-25 22:30:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:30,234 INFO L225 Difference]: With dead ends: 601 [2022-11-25 22:30:30,234 INFO L226 Difference]: Without dead ends: 381 [2022-11-25 22:30:30,235 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 [2022-11-25 22:30:30,236 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:30,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 857 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-25 22:30:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-25 22:30:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 229 states have (on average 1.205240174672489) internal successors, (276), 239 states have internal predecessors, (276), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-25 22:30:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 485 transitions. [2022-11-25 22:30:30,269 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 485 transitions. Word has length 163 [2022-11-25 22:30:30,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:30,270 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 485 transitions. [2022-11-25 22:30:30,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 22:30:30,271 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 485 transitions. [2022-11-25 22:30:30,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 22:30:30,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:30,274 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:30,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:30:30,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1897140614, now seen corresponding path program 1 times [2022-11-25 22:30:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:30,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981356871] [2022-11-25 22:30:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 22:30:30,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:30,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981356871] [2022-11-25 22:30:30,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981356871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:30,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:30,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:30,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818782182] [2022-11-25 22:30:30,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:30,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:30,431 INFO L87 Difference]: Start difference. First operand 381 states and 485 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 22:30:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:30,600 INFO L93 Difference]: Finished difference Result 760 states and 993 transitions. [2022-11-25 22:30:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:30,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 168 [2022-11-25 22:30:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:30,605 INFO L225 Difference]: With dead ends: 760 [2022-11-25 22:30:30,605 INFO L226 Difference]: Without dead ends: 448 [2022-11-25 22:30:30,606 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 [2022-11-25 22:30:30,607 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 76 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:30,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 871 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-25 22:30:30,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2022-11-25 22:30:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 277 states have (on average 1.2490974729241877) internal successors, (346), 287 states have internal predecessors, (346), 119 states have call successors, (119), 46 states have call predecessors, (119), 46 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2022-11-25 22:30:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 583 transitions. [2022-11-25 22:30:30,663 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 583 transitions. Word has length 168 [2022-11-25 22:30:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:30,664 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 583 transitions. [2022-11-25 22:30:30,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 22:30:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 583 transitions. [2022-11-25 22:30:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 22:30:30,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:30,667 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:30,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:30:30,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:30,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1701849785, now seen corresponding path program 1 times [2022-11-25 22:30:30,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:30,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281615515] [2022-11-25 22:30:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:30,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 22:30:30,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:30,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281615515] [2022-11-25 22:30:30,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281615515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:30,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458450973] [2022-11-25 22:30:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:30,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:30,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:30,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:30,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:30:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:31,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:31,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 22:30:31,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:31,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458450973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:31,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:30:31,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 22:30:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193773903] [2022-11-25 22:30:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:31,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:30:31,602 INFO L87 Difference]: Start difference. First operand 443 states and 583 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-25 22:30:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:31,937 INFO L93 Difference]: Finished difference Result 1056 states and 1389 transitions. [2022-11-25 22:30:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:31,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 169 [2022-11-25 22:30:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:31,944 INFO L225 Difference]: With dead ends: 1056 [2022-11-25 22:30:31,944 INFO L226 Difference]: Without dead ends: 843 [2022-11-25 22:30:31,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:30:31,946 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 372 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:31,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 928 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:30:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-25 22:30:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-25 22:30:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 529 states have (on average 1.2495274102079394) internal successors, (661), 546 states have internal predecessors, (661), 222 states have call successors, (222), 89 states have call predecessors, (222), 89 states have return successors, (229), 218 states have call predecessors, (229), 220 states have call successors, (229) [2022-11-25 22:30:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1112 transitions. [2022-11-25 22:30:32,026 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1112 transitions. Word has length 169 [2022-11-25 22:30:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:32,026 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1112 transitions. [2022-11-25 22:30:32,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-25 22:30:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1112 transitions. [2022-11-25 22:30:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-25 22:30:32,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:32,031 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:32,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:32,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:32,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:32,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1165925271, now seen corresponding path program 1 times [2022-11-25 22:30:32,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:32,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271532653] [2022-11-25 22:30:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:32,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:30:32,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271532653] [2022-11-25 22:30:32,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271532653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840729170] [2022-11-25 22:30:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:32,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:32,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:32,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:30:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:32,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:32,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:30:33,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:30:33,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840729170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:33,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [995142300] [2022-11-25 22:30:33,192 INFO L159 IcfgInterpreter]: Started Sifa with 139 locations of interest [2022-11-25 22:30:33,193 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:33,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:30:33,202 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:30:33,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:32:24,263 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-11-25 22:32:25,513 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-25 22:32:25,797 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-11-25 22:32:26,077 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-11-25 22:32:27,573 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-11-25 22:32:29,430 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-11-25 22:32:29,471 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-11-25 22:32:30,197 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-11-25 22:32:30,469 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 277 for LOIs [2022-11-25 22:32:31,949 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-11-25 22:32:31,990 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-11-25 22:32:32,183 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 289 for LOIs [2022-11-25 22:32:32,352 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 289 for LOIs [2022-11-25 22:32:34,919 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 273 for LOIs [2022-11-25 22:32:35,684 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 255 for LOIs [2022-11-25 22:32:36,214 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 255 for LOIs [2022-11-25 22:32:36,250 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 255 for LOIs [2022-11-25 22:32:36,302 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 421 for LOIs [2022-11-25 22:32:36,880 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:34:07,895 WARN L233 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 732 DAG size of output: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:24,428 WARN L233 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 721 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:33,065 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 727 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:41,230 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 731 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:00,457 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 512 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:09,467 WARN L233 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 556 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:16,959 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 554 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:40,786 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 557 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:41,458 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:04,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [995142300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:37:04,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:37:04,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [4, 4, 4] total 101 [2022-11-25 22:37:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542729387] [2022-11-25 22:37:04,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:37:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-25 22:37:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:37:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-25 22:37:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=9738, Unknown=0, NotChecked=0, Total=10100 [2022-11-25 22:37:04,439 INFO L87 Difference]: Start difference. First operand 841 states and 1112 transitions. Second operand has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-25 22:37:22,401 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 542 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:28,549 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 541 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:34,673 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 540 DAG size of output: 502 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:40,785 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 539 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:46,882 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 538 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:53,048 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 537 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:20,077 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 491 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:25,811 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 489 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:36,098 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 483 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:42,620 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 484 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:49,478 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 485 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:40:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:04,070 INFO L93 Difference]: Finished difference Result 1994 states and 2720 transitions. [2022-11-25 22:40:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-25 22:40:04,070 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) Word has length 164 [2022-11-25 22:40:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:04,076 INFO L225 Difference]: With dead ends: 1994 [2022-11-25 22:40:04,077 INFO L226 Difference]: Without dead ends: 1180 [2022-11-25 22:40:04,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 391 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5026 ImplicationChecksByTransitivity, 352.0s TimeCoverageRelationStatistics Valid=513, Invalid=13059, Unknown=0, NotChecked=0, Total=13572 [2022-11-25 22:40:04,083 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 469 mSDsluCounter, 13752 mSDsCounter, 0 mSdLazyCounter, 21815 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 14216 SdHoareTripleChecker+Invalid, 21876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 21815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:04,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 14216 Invalid, 21876 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [61 Valid, 21815 Invalid, 0 Unknown, 0 Unchecked, 93.7s Time] [2022-11-25 22:40:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-25 22:40:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1006. [2022-11-25 22:40:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 656 states have (on average 1.2698170731707317) internal successors, (833), 673 states have internal predecessors, (833), 244 states have call successors, (244), 111 states have call predecessors, (244), 105 states have return successors, (251), 234 states have call predecessors, (251), 242 states have call successors, (251) [2022-11-25 22:40:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1328 transitions. [2022-11-25 22:40:04,432 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1328 transitions. Word has length 164 [2022-11-25 22:40:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:04,432 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1328 transitions. [2022-11-25 22:40:04,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-25 22:40:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1328 transitions. [2022-11-25 22:40:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-25 22:40:04,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:04,438 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:04,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:40:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 22:40:04,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:04,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:04,647 INFO L85 PathProgramCache]: Analyzing trace with hash -289588233, now seen corresponding path program 1 times [2022-11-25 22:40:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:04,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643139275] [2022-11-25 22:40:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-25 22:40:04,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:04,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643139275] [2022-11-25 22:40:04,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643139275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:04,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:40:04,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:40:04,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936061943] [2022-11-25 22:40:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:04,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:40:04,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:40:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:40:04,778 INFO L87 Difference]: Start difference. First operand 1006 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 22:40:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:05,414 INFO L93 Difference]: Finished difference Result 1520 states and 2013 transitions. [2022-11-25 22:40:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:40:05,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 166 [2022-11-25 22:40:05,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:05,420 INFO L225 Difference]: With dead ends: 1520 [2022-11-25 22:40:05,420 INFO L226 Difference]: Without dead ends: 966 [2022-11-25 22:40:05,423 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 [2022-11-25 22:40:05,423 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 448 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:05,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1178 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:40:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-25 22:40:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2022-11-25 22:40:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 627 states have (on average 1.277511961722488) internal successors, (801), 644 states have internal predecessors, (801), 235 states have call successors, (235), 107 states have call predecessors, (235), 101 states have return successors, (233), 225 states have call predecessors, (233), 233 states have call successors, (233) [2022-11-25 22:40:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1269 transitions. [2022-11-25 22:40:05,776 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1269 transitions. Word has length 166 [2022-11-25 22:40:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:05,777 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1269 transitions. [2022-11-25 22:40:05,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 22:40:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1269 transitions. [2022-11-25 22:40:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 22:40:05,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:05,782 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:05,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 22:40:05,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2083567838, now seen corresponding path program 1 times [2022-11-25 22:40:05,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:05,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562325385] [2022-11-25 22:40:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:05,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:40:05,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:05,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562325385] [2022-11-25 22:40:05,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562325385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:40:05,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892959373] [2022-11-25 22:40:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:05,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:05,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:05,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:40:05,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f6a3c-76f3-402e-893d-1c56083b919f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:40:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:06,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:40:06,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:40:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:40:06,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:40:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 22:40:06,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892959373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:40:06,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1779163086] [2022-11-25 22:40:06,521 INFO L159 IcfgInterpreter]: Started Sifa with 144 locations of interest [2022-11-25 22:40:06,526 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:40:06,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:40:06,529 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:40:06,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:41:53,402 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-11-25 22:41:54,605 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-25 22:41:54,924 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-11-25 22:41:55,225 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-11-25 22:41:56,851 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-11-25 22:41:58,677 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-11-25 22:41:58,723 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-11-25 22:41:59,620 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 438 for LOIs [2022-11-25 22:41:59,907 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-11-25 22:42:01,378 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-11-25 22:42:01,422 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-11-25 22:42:02,541 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 283 for LOIs [2022-11-25 22:42:02,755 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 283 for LOIs [2022-11-25 22:42:05,290 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 275 for LOIs [2022-11-25 22:42:06,144 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 257 for LOIs [2022-11-25 22:42:06,783 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 257 for LOIs [2022-11-25 22:42:06,838 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2022-11-25 22:42:06,891 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 465 for LOIs [2022-11-25 22:42:12,238 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 262 for LOIs [2022-11-25 22:42:12,301 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:43:37,713 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 438 DAG size of output: 257 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:43,266 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 461 DAG size of output: 277 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:54,535 WARN L233 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 732 DAG size of output: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)