./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0684811b66680ff9a661ea21879b3502eab6dd1ae141cb77fa167c05dd5b0ff9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:08:30,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:08:30,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:08:30,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:08:30,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:08:30,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:08:30,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:08:30,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:08:30,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:08:30,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:08:30,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:08:30,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:08:30,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:08:30,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:08:30,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:08:30,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:08:30,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:08:30,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:08:30,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:08:30,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:08:30,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:08:30,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:08:30,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:08:30,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:08:30,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:08:30,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:08:30,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:08:30,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:08:30,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:08:30,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:08:30,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:08:30,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:08:30,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:08:30,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:08:30,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:08:30,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:08:30,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:08:30,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:08:30,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:08:30,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:08:30,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:08:30,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:08:30,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:08:30,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:08:30,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:08:30,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:08:30,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:08:30,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:08:30,287 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:08:30,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:08:30,287 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:08:30,288 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:08:30,288 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:08:30,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:08:30,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:08:30,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:08:30,288 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:08:30,288 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:08:30,288 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:08:30,289 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:08:30,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:08:30,289 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:08:30,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:08:30,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:08:30,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:08:30,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:08:30,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:08:30,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:08:30,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:08:30,291 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:08:30,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:08:30,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:08:30,291 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:08:30,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:08:30,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:08:30,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:08:30,292 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_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0684811b66680ff9a661ea21879b3502eab6dd1ae141cb77fa167c05dd5b0ff9 [2022-12-14 13:08:30,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:08:30,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:08:30,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:08:30,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:08:30,510 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:08:30,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product35.cil.c [2022-12-14 13:08:33,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:08:33,396 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:08:33,396 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/sv-benchmarks/c/product-lines/email_spec4_product35.cil.c [2022-12-14 13:08:33,414 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/data/8a12d737e/b3b0abf591034dd6994ef95cd5d33fc8/FLAG5efaf3575 [2022-12-14 13:08:33,429 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/data/8a12d737e/b3b0abf591034dd6994ef95cd5d33fc8 [2022-12-14 13:08:33,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:08:33,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:08:33,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:08:33,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:08:33,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:08:33,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:08:33" (1/1) ... [2022-12-14 13:08:33,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b69dd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:33, skipping insertion in model container [2022-12-14 13:08:33,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:08:33" (1/1) ... [2022-12-14 13:08:33,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:08:33,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:08:33,637 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_cd77a95a-5e1d-4f6b-8970-d07ed2234726/sv-benchmarks/c/product-lines/email_spec4_product35.cil.c[1542,1555] [2022-12-14 13:08:33,920 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,921 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,923 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,942 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,948 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,949 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,950 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,961 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,962 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,964 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:33,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:08:33,976 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:08:33,985 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_cd77a95a-5e1d-4f6b-8970-d07ed2234726/sv-benchmarks/c/product-lines/email_spec4_product35.cil.c[1542,1555] [2022-12-14 13:08:34,023 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,024 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,026 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,029 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,030 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,030 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,031 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,034 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,035 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,036 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:08:34,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:08:34,057 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:08:34,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34 WrapperNode [2022-12-14 13:08:34,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:08:34,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:08:34,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:08:34,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:08:34,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,113 INFO L138 Inliner]: procedures = 137, calls = 247, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1148 [2022-12-14 13:08:34,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:08:34,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:08:34,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:08:34,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:08:34,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:08:34,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:08:34,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:08:34,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:08:34,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (1/1) ... [2022-12-14 13:08:34,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:08:34,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:08:34,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:08:34,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:08:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 13:08:34,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 13:08:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 13:08:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 13:08:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 13:08:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 13:08:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 13:08:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 13:08:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 13:08:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 13:08:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 13:08:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 13:08:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 13:08:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 13:08:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 13:08:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 13:08:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 13:08:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 13:08:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 13:08:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 13:08:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 13:08:34,256 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 13:08:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 13:08:34,256 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 13:08:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 13:08:34,256 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 13:08:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 13:08:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 13:08:34,256 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 13:08:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 13:08:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 13:08:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 13:08:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 13:08:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:08:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 13:08:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 13:08:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 13:08:34,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 13:08:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 13:08:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 13:08:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 13:08:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 13:08:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 13:08:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 13:08:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 13:08:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 13:08:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 13:08:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 13:08:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 13:08:34,259 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 13:08:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 13:08:34,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 13:08:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 13:08:34,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 13:08:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 13:08:34,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 13:08:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:08:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 13:08:34,260 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 13:08:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 13:08:34,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 13:08:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:08:34,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:08:34,426 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:08:34,428 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:08:35,109 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:08:35,506 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:08:35,507 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:08:35,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:08:35 BoogieIcfgContainer [2022-12-14 13:08:35,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:08:35,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:08:35,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:08:35,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:08:35,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:08:33" (1/3) ... [2022-12-14 13:08:35,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a73b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:08:35, skipping insertion in model container [2022-12-14 13:08:35,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:08:34" (2/3) ... [2022-12-14 13:08:35,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a73b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:08:35, skipping insertion in model container [2022-12-14 13:08:35,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:08:35" (3/3) ... [2022-12-14 13:08:35,518 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product35.cil.c [2022-12-14 13:08:35,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:08:35,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:08:35,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:08:35,594 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;@2e180efe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:08:35,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:08:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-12-14 13:08:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 13:08:35,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:08:35,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:08:35,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:08:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:08:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1948327327, now seen corresponding path program 1 times [2022-12-14 13:08:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:08:35,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473050766] [2022-12-14 13:08:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:08:35,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:08:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:08:35,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:08:35,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473050766] [2022-12-14 13:08:35,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473050766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:08:35,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:08:35,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:08:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014289756] [2022-12-14 13:08:35,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:08:35,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:08:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:08:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:08:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:08:35,871 INFO L87 Difference]: Start difference. First operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:08:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:08:36,010 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2022-12-14 13:08:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:08:36,012 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-12-14 13:08:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:08:36,023 INFO L225 Difference]: With dead ends: 392 [2022-12-14 13:08:36,024 INFO L226 Difference]: Without dead ends: 239 [2022-12-14 13:08:36,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:08:36,032 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:08:36,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:08:36,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-14 13:08:36,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-12-14 13:08:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 138 states have internal predecessors, (169), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 13:08:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2022-12-14 13:08:36,077 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 75 [2022-12-14 13:08:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:08:36,078 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2022-12-14 13:08:36,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:08:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2022-12-14 13:08:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 13:08:36,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:08:36,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:08:36,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:08:36,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:08:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:08:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1963072421, now seen corresponding path program 1 times [2022-12-14 13:08:36,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:08:36,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600495507] [2022-12-14 13:08:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:08:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:08:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:08:36,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:08:36,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600495507] [2022-12-14 13:08:36,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600495507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:08:36,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:08:36,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:08:36,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096625650] [2022-12-14 13:08:36,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:08:36,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:08:36,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:08:36,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:08:36,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:08:36,231 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:08:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:08:36,359 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2022-12-14 13:08:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:08:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-12-14 13:08:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:08:36,361 INFO L225 Difference]: With dead ends: 388 [2022-12-14 13:08:36,361 INFO L226 Difference]: Without dead ends: 241 [2022-12-14 13:08:36,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:08:36,363 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:08:36,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:08:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-14 13:08:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-12-14 13:08:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 13:08:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2022-12-14 13:08:36,377 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 76 [2022-12-14 13:08:36,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:08:36,377 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2022-12-14 13:08:36,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:08:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2022-12-14 13:08:36,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 13:08:36,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:08:36,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:08:36,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:08:36,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:08:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:08:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 570583671, now seen corresponding path program 1 times [2022-12-14 13:08:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:08:36,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431456771] [2022-12-14 13:08:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:08:36,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:08:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:08:36,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:08:36,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431456771] [2022-12-14 13:08:36,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431456771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:08:36,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:08:36,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:08:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039683090] [2022-12-14 13:08:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:08:36,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:08:36,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:08:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:08:36,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:08:36,455 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:08:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:08:36,573 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2022-12-14 13:08:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:08:36,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-12-14 13:08:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:08:36,576 INFO L225 Difference]: With dead ends: 517 [2022-12-14 13:08:36,576 INFO L226 Difference]: Without dead ends: 294 [2022-12-14 13:08:36,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:08:36,577 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 59 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:08:36,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 557 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:08:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-14 13:08:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2022-12-14 13:08:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 174 states have internal predecessors, (226), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-14 13:08:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2022-12-14 13:08:36,593 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 81 [2022-12-14 13:08:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:08:36,593 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2022-12-14 13:08:36,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:08:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2022-12-14 13:08:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 13:08:36,595 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:08:36,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:08:36,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:08:36,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:08:36,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:08:36,596 INFO L85 PathProgramCache]: Analyzing trace with hash 732901841, now seen corresponding path program 1 times [2022-12-14 13:08:36,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:08:36,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899488694] [2022-12-14 13:08:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:08:36,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:08:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:08:36,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:08:36,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899488694] [2022-12-14 13:08:36,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899488694] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:08:36,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023544777] [2022-12-14 13:08:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:08:36,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:08:36,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:08:36,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:08:36,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:08:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:37,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:08:37,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:08:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:08:37,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:08:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:08:37,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023544777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:08:37,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002340357] [2022-12-14 13:08:37,157 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 13:08:37,157 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:08:37,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:08:37,164 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:08:37,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:09:05,518 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 13:09:05,805 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-12-14 13:09:07,548 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 13:09:07,588 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 13:09:07,875 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2022-12-14 13:09:10,536 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 274 for LOIs [2022-12-14 13:09:20,759 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 451 for LOIs [2022-12-14 13:09:21,330 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-12-14 13:09:21,407 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-12-14 13:09:21,445 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-12-14 13:09:24,728 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2022-12-14 13:09:24,768 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-12-14 13:09:24,812 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:09:30,079 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 553 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:10:27,425 WARN L233 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 474 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:10:46,360 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 451 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:10:53,942 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 477 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:11:46,986 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4121#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (<= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 ~__ste_Client_AddressBook2_Address2~0) (<= 0 ~__SELECTED_FEATURE_Base~0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (<= ~head~0.offset 0) (<= ~__ste_Client_AddressBook1_Alias1~0 0) (<= 0 ~__ste_Client_Keyring2_User0~0) (<= 0 ~__ste_Client_Keyring0_User1~0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= ~__ste_Client_AddressBook1_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (<= ~__ste_email_subject1~0.base 0) (<= ~__ste_client_name2~0.base 0) (<= ~__ste_Client_AddressBook0_Alias0~0 0) (<= ~__ste_email_body0~0.offset 0) (<= ~__ste_client_name1~0.offset 0) (<= 0 |#NULL.base|) (<= ~__ste_ClientAddressBook_size2~0 0) (<= ~__ste_client_outbuffer3~0 0) (<= ~__ste_Client_Keyring1_User1~0 0) (<= 0 ~__ste_email_body1~0.base) (<= ~__ste_Client_counter~0 0) (<= ~__ste_ClientKeyring_size2~0 0) (<= ~__SELECTED_FEATURE_Sign~0 0) (<= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~pubkey~0#1|) (<= 0 ~__ste_Client_AddressBook2_Alias2~0) (<= ~__ste_client_forwardReceiver0~0 0) (<= 0 ~__ste_Client_Keyring2_PublicKey1~0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= 0 ~__ste_email_subject0~0.base) (<= ~__ste_email_subject1~0.offset 0) (<= ~__ste_Client_AddressBook2_Alias0~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= 0 ~__ste_Client_AddressBook1_Address1~0) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (<= ~__ste_Client_Keyring0_User0~0 0) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1|) (<= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey2~0) (<= 0 ~__ste_ClientAddressBook_size0~0) (<= 2 ~rjh~0) (<= 0 ~__SELECTED_FEATURE_Encrypt~0) (<= 0 ~__ste_client_autoResponse1~0) (<= 0 ~__ste_client_outbuffer0~0) (<= |old(~queued_client~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= 0 ~head~0.offset) (<= ~chuck~0 3) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= 0 ~__ste_client_outbuffer1~0) (<= 0 ~__ste_ClientAddressBook_size1~0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~15#1| 2147483648)) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (<= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_client_name0~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Alias1~0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= 0 ~__ste_Client_Keyring0_User0~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (<= 0 ~__SELECTED_FEATURE_AutoResponder~0) (<= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~6#1|) (<= 0 ~__ste_email_isSigned1~0) (<= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~15#1| 2147483647) (= ~__ste_Client_Keyring0_User2~0 0) (<= 0 ~__ste_ClientKeyring_size2~0) (<= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (<= 0 ~__ste_Client_Keyring1_User1~0) (<= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 0 ~__ste_ClientAddressBook_size2~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 0 ~__SELECTED_FEATURE_Sign~0) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (<= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_email_id0~0 0) (<= 0 ~__ste_client_name2~0.offset) (<= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~__ste_Client_AddressBook2_Alias1~0 0) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_Email_counter~0 0) (<= ~__ste_email_subject0~0.base 0) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~16#1|) (<= |outgoing__wrappee__AutoResponder_~tmp~16#1| 2) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_subject1~0.offset) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__ste_Client_counter~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= 0 ~__ste_Client_Keyring0_PublicKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (<= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (<= 0 ~__ste_email_id1~0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= 0 ~__ste_Client_AddressBook1_Address0~0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_Client_AddressBook1_Alias1~0) (<= ~__ste_client_autoResponse0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= 0 ~__ste_Client_AddressBook0_Alias0~0) (<= 0 ~__ste_Client_Keyring2_PublicKey0~0) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= ~__ste_ClientAddressBook_size0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_client_name0~0.base) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~26#1| 0) (<= 0 ~__ste_client_autoResponse0~0) (<= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1| 1) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= 0 ~__ste_email_body0~0.offset) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (<= 0 ~__ste_Client_Keyring1_PublicKey1~0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~6#1| 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (<= 0 ~queued_client~0) (<= 0 ~__ste_client_forwardReceiver0~0) (<= 0 ~__SELECTED_FEATURE_Keys~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey0~0) (<= 0 ~__ste_email_isSignatureVerified0~0) (<= 0 ~__ste_email_subject1~0.base) (<= 0 ~__ste_ClientKeyring_size1~0) (<= |#NULL.base| 0) (<= 0 ~__ste_client_forwardReceiver2~0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= |old(~queue_empty~0)| 1) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (<= ~__ste_client_outbuffer0~0 0) (<= ~__ste_Client_Keyring0_User1~0 0) (<= ~head~0.base 0) (<= 0 ~__ste_client_name1~0.offset) (<= ~__ste_client_forwardReceiver1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1| 0)) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= ~__ste_client_name0~0.offset 0) (<= 0 ~__ste_client_outbuffer3~0) (<= 0 ~__ste_client_name2~0.base) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (= ~__ste_client_privateKey0~0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~26#1|) (<= ~rjh~0 2) (<= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 ~__ste_Client_AddressBook2_Alias0~0) (<= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (<= 0 ~__ste_Client_Keyring2_PublicKey2~0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= ~__ste_Client_Keyring2_User0~0 0) (<= 0 ~__GUIDSL_NON_TERMINAL_main~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (<= 3 ~chuck~0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~30#1| 2147483648)) (<= ~__ste_client_autoResponse2~0 0) (<= 1 ~bob~0) (<= ~__ste_client_outbuffer1~0 0) (<= ~__ste_ClientAddressBook_size1~0 0) (<= 0 ~__ste_client_name1~0.base) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~30#1| 2147483647) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (<= ~__ste_email_body1~0.base 0) (<= ~queued_client~0 0))' at error location [2022-12-14 13:11:46,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:11:46,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:11:46,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 13:11:46,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118014172] [2022-12-14 13:11:46,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:11:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:11:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:11:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 13:11:46,989 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 13:11:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:47,237 INFO L93 Difference]: Finished difference Result 711 states and 1056 transitions. [2022-12-14 13:11:47,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:11:47,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 82 [2022-12-14 13:11:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:47,240 INFO L225 Difference]: With dead ends: 711 [2022-12-14 13:11:47,240 INFO L226 Difference]: Without dead ends: 564 [2022-12-14 13:11:47,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 142.1s TimeCoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 13:11:47,243 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 171 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:47,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1543 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-12-14 13:11:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 549. [2022-12-14 13:11:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 351 states have (on average 1.4586894586894588) internal successors, (512), 355 states have internal predecessors, (512), 168 states have call successors, (168), 29 states have call predecessors, (168), 29 states have return successors, (167), 166 states have call predecessors, (167), 167 states have call successors, (167) [2022-12-14 13:11:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 847 transitions. [2022-12-14 13:11:47,267 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 847 transitions. Word has length 82 [2022-12-14 13:11:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:47,267 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 847 transitions. [2022-12-14 13:11:47,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 13:11:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 847 transitions. [2022-12-14 13:11:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 13:11:47,270 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:47,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:47,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:11:47,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:11:47,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:47,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1077893402, now seen corresponding path program 1 times [2022-12-14 13:11:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:47,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124456836] [2022-12-14 13:11:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:47,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:47,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124456836] [2022-12-14 13:11:47,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124456836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:47,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:47,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001689049] [2022-12-14 13:11:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:47,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:47,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:47,586 INFO L87 Difference]: Start difference. First operand 549 states and 847 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:47,719 INFO L93 Difference]: Finished difference Result 1328 states and 2092 transitions. [2022-12-14 13:11:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:47,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2022-12-14 13:11:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:47,725 INFO L225 Difference]: With dead ends: 1328 [2022-12-14 13:11:47,725 INFO L226 Difference]: Without dead ends: 811 [2022-12-14 13:11:47,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:47,727 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 57 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:47,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 570 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-12-14 13:11:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 806. [2022-12-14 13:11:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 529 states have (on average 1.4839319470699432) internal successors, (785), 533 states have internal predecessors, (785), 247 states have call successors, (247), 29 states have call predecessors, (247), 29 states have return successors, (246), 245 states have call predecessors, (246), 246 states have call successors, (246) [2022-12-14 13:11:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1278 transitions. [2022-12-14 13:11:47,762 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1278 transitions. Word has length 88 [2022-12-14 13:11:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:47,762 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1278 transitions. [2022-12-14 13:11:47,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:47,763 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1278 transitions. [2022-12-14 13:11:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 13:11:47,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:47,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:47,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:11:47,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1452363351, now seen corresponding path program 1 times [2022-12-14 13:11:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:47,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82632160] [2022-12-14 13:11:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:47,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:47,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:47,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82632160] [2022-12-14 13:11:47,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82632160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:47,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:47,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:47,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799920235] [2022-12-14 13:11:47,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:47,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:47,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:47,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:47,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:47,833 INFO L87 Difference]: Start difference. First operand 806 states and 1278 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:47,960 INFO L93 Difference]: Finished difference Result 1950 states and 3139 transitions. [2022-12-14 13:11:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:47,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2022-12-14 13:11:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:47,967 INFO L225 Difference]: With dead ends: 1950 [2022-12-14 13:11:47,967 INFO L226 Difference]: Without dead ends: 1206 [2022-12-14 13:11:47,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:47,971 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 55 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:47,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 556 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-12-14 13:11:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1201. [2022-12-14 13:11:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 805 states have (on average 1.4968944099378882) internal successors, (1205), 809 states have internal predecessors, (1205), 366 states have call successors, (366), 29 states have call predecessors, (366), 29 states have return successors, (365), 364 states have call predecessors, (365), 365 states have call successors, (365) [2022-12-14 13:11:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1936 transitions. [2022-12-14 13:11:48,045 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1936 transitions. Word has length 89 [2022-12-14 13:11:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:48,045 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1936 transitions. [2022-12-14 13:11:48,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1936 transitions. [2022-12-14 13:11:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 13:11:48,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:48,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:48,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 13:11:48,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash 857991992, now seen corresponding path program 1 times [2022-12-14 13:11:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:48,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278096271] [2022-12-14 13:11:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:48,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:48,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:48,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278096271] [2022-12-14 13:11:48,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278096271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:48,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:48,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261260197] [2022-12-14 13:11:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:48,136 INFO L87 Difference]: Start difference. First operand 1201 states and 1936 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:48,316 INFO L93 Difference]: Finished difference Result 2853 states and 4651 transitions. [2022-12-14 13:11:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:48,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2022-12-14 13:11:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:48,326 INFO L225 Difference]: With dead ends: 2853 [2022-12-14 13:11:48,326 INFO L226 Difference]: Without dead ends: 1794 [2022-12-14 13:11:48,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:48,331 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 53 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:48,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 551 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-12-14 13:11:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1789. [2022-12-14 13:11:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1231 states have (on average 1.5052802599512591) internal successors, (1853), 1235 states have internal predecessors, (1853), 528 states have call successors, (528), 29 states have call predecessors, (528), 29 states have return successors, (527), 526 states have call predecessors, (527), 527 states have call successors, (527) [2022-12-14 13:11:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2908 transitions. [2022-12-14 13:11:48,457 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2908 transitions. Word has length 90 [2022-12-14 13:11:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:48,457 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2908 transitions. [2022-12-14 13:11:48,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2908 transitions. [2022-12-14 13:11:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 13:11:48,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:48,466 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:48,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 13:11:48,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash -240179128, now seen corresponding path program 1 times [2022-12-14 13:11:48,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:48,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901399568] [2022-12-14 13:11:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:48,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:48,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901399568] [2022-12-14 13:11:48,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901399568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:48,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:48,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721249411] [2022-12-14 13:11:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:48,543 INFO L87 Difference]: Start difference. First operand 1789 states and 2908 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:48,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:48,735 INFO L93 Difference]: Finished difference Result 4238 states and 6959 transitions. [2022-12-14 13:11:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:48,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 91 [2022-12-14 13:11:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:48,745 INFO L225 Difference]: With dead ends: 4238 [2022-12-14 13:11:48,745 INFO L226 Difference]: Without dead ends: 2728 [2022-12-14 13:11:48,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:48,750 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 51 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:48,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 549 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2022-12-14 13:11:48,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 2723. [2022-12-14 13:11:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 1920 states have (on average 1.5098958333333334) internal successors, (2899), 1924 states have internal predecessors, (2899), 773 states have call successors, (773), 29 states have call predecessors, (773), 29 states have return successors, (772), 771 states have call predecessors, (772), 772 states have call successors, (772) [2022-12-14 13:11:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 4444 transitions. [2022-12-14 13:11:48,869 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 4444 transitions. Word has length 91 [2022-12-14 13:11:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:48,869 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 4444 transitions. [2022-12-14 13:11:48,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 4444 transitions. [2022-12-14 13:11:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 13:11:48,876 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:48,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:48,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 13:11:48,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1625075812, now seen corresponding path program 1 times [2022-12-14 13:11:48,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:48,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077116486] [2022-12-14 13:11:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:48,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:48,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:48,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077116486] [2022-12-14 13:11:48,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077116486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:48,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:48,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:48,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328833092] [2022-12-14 13:11:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:48,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:48,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:48,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:48,931 INFO L87 Difference]: Start difference. First operand 2723 states and 4444 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:49,187 INFO L93 Difference]: Finished difference Result 6754 states and 11119 transitions. [2022-12-14 13:11:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:49,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-12-14 13:11:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:49,202 INFO L225 Difference]: With dead ends: 6754 [2022-12-14 13:11:49,202 INFO L226 Difference]: Without dead ends: 4453 [2022-12-14 13:11:49,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:49,209 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 49 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:49,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 569 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2022-12-14 13:11:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4448. [2022-12-14 13:11:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 3152 states have (on average 1.501269035532995) internal successors, (4732), 3156 states have internal predecessors, (4732), 1266 states have call successors, (1266), 29 states have call predecessors, (1266), 29 states have return successors, (1265), 1264 states have call predecessors, (1265), 1265 states have call successors, (1265) [2022-12-14 13:11:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 7263 transitions. [2022-12-14 13:11:49,418 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 7263 transitions. Word has length 92 [2022-12-14 13:11:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:49,418 INFO L495 AbstractCegarLoop]: Abstraction has 4448 states and 7263 transitions. [2022-12-14 13:11:49,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 7263 transitions. [2022-12-14 13:11:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 13:11:49,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:49,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:49,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 13:11:49,428 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2077723676, now seen corresponding path program 1 times [2022-12-14 13:11:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:49,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702152185] [2022-12-14 13:11:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:49,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:49,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702152185] [2022-12-14 13:11:49,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702152185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:49,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:49,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667287303] [2022-12-14 13:11:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:49,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:49,484 INFO L87 Difference]: Start difference. First operand 4448 states and 7263 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:49,833 INFO L93 Difference]: Finished difference Result 11170 states and 18404 transitions. [2022-12-14 13:11:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:49,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-12-14 13:11:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:49,860 INFO L225 Difference]: With dead ends: 11170 [2022-12-14 13:11:49,860 INFO L226 Difference]: Without dead ends: 7410 [2022-12-14 13:11:49,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:49,871 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 47 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:49,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 554 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2022-12-14 13:11:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 7405. [2022-12-14 13:11:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7405 states, 5287 states have (on average 1.4974465670512578) internal successors, (7917), 5291 states have internal predecessors, (7917), 2088 states have call successors, (2088), 29 states have call predecessors, (2088), 29 states have return successors, (2087), 2086 states have call predecessors, (2087), 2087 states have call successors, (2087) [2022-12-14 13:11:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 12092 transitions. [2022-12-14 13:11:50,258 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 12092 transitions. Word has length 93 [2022-12-14 13:11:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:50,258 INFO L495 AbstractCegarLoop]: Abstraction has 7405 states and 12092 transitions. [2022-12-14 13:11:50,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 12092 transitions. [2022-12-14 13:11:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 13:11:50,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:50,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:50,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 13:11:50,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:50,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash -737047154, now seen corresponding path program 1 times [2022-12-14 13:11:50,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:50,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716500153] [2022-12-14 13:11:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:50,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:50,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:50,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716500153] [2022-12-14 13:11:50,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716500153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:50,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:50,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:50,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426552969] [2022-12-14 13:11:50,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:50,327 INFO L87 Difference]: Start difference. First operand 7405 states and 12092 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:50,920 INFO L93 Difference]: Finished difference Result 18637 states and 30666 transitions. [2022-12-14 13:11:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:50,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-12-14 13:11:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:50,960 INFO L225 Difference]: With dead ends: 18637 [2022-12-14 13:11:50,960 INFO L226 Difference]: Without dead ends: 12354 [2022-12-14 13:11:50,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:50,972 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 45 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:50,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 551 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2022-12-14 13:11:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 12349. [2022-12-14 13:11:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12349 states, 9028 states have (on average 1.4995569339831636) internal successors, (13538), 9032 states have internal predecessors, (13538), 3291 states have call successors, (3291), 29 states have call predecessors, (3291), 29 states have return successors, (3290), 3289 states have call predecessors, (3290), 3290 states have call successors, (3290) [2022-12-14 13:11:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12349 states to 12349 states and 20119 transitions. [2022-12-14 13:11:51,494 INFO L78 Accepts]: Start accepts. Automaton has 12349 states and 20119 transitions. Word has length 94 [2022-12-14 13:11:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:51,494 INFO L495 AbstractCegarLoop]: Abstraction has 12349 states and 20119 transitions. [2022-12-14 13:11:51,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 12349 states and 20119 transitions. [2022-12-14 13:11:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 13:11:51,507 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:51,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:51,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 13:11:51,507 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash -208984733, now seen corresponding path program 1 times [2022-12-14 13:11:51,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:51,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689224227] [2022-12-14 13:11:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:51,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:51,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:51,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689224227] [2022-12-14 13:11:51,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689224227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:51,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:51,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:51,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922317525] [2022-12-14 13:11:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:51,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:51,561 INFO L87 Difference]: Start difference. First operand 12349 states and 20119 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:52,509 INFO L93 Difference]: Finished difference Result 32641 states and 53528 transitions. [2022-12-14 13:11:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:52,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2022-12-14 13:11:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:52,562 INFO L225 Difference]: With dead ends: 32641 [2022-12-14 13:11:52,563 INFO L226 Difference]: Without dead ends: 21866 [2022-12-14 13:11:52,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:52,580 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 43 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:52,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 554 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21866 states. [2022-12-14 13:11:53,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21866 to 21861. [2022-12-14 13:11:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21861 states, 16090 states have (on average 1.4922933499067743) internal successors, (24011), 16094 states have internal predecessors, (24011), 5741 states have call successors, (5741), 29 states have call predecessors, (5741), 29 states have return successors, (5740), 5739 states have call predecessors, (5740), 5740 states have call successors, (5740) [2022-12-14 13:11:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21861 states to 21861 states and 35492 transitions. [2022-12-14 13:11:53,917 INFO L78 Accepts]: Start accepts. Automaton has 21861 states and 35492 transitions. Word has length 95 [2022-12-14 13:11:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:53,917 INFO L495 AbstractCegarLoop]: Abstraction has 21861 states and 35492 transitions. [2022-12-14 13:11:53,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:53,918 INFO L276 IsEmpty]: Start isEmpty. Operand 21861 states and 35492 transitions. [2022-12-14 13:11:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 13:11:53,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:53,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:53,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 13:11:53,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:53,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1541857236, now seen corresponding path program 1 times [2022-12-14 13:11:53,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:53,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847398849] [2022-12-14 13:11:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:53,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:53,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:53,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847398849] [2022-12-14 13:11:53,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847398849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:53,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:53,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179359633] [2022-12-14 13:11:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:53,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:53,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:53,997 INFO L87 Difference]: Start difference. First operand 21861 states and 35492 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:55,438 INFO L93 Difference]: Finished difference Result 59328 states and 96780 transitions. [2022-12-14 13:11:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:55,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2022-12-14 13:11:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:55,543 INFO L225 Difference]: With dead ends: 59328 [2022-12-14 13:11:55,543 INFO L226 Difference]: Without dead ends: 39636 [2022-12-14 13:11:55,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:55,580 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 41 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:55,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 557 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:55,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39636 states. [2022-12-14 13:11:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39636 to 39631. [2022-12-14 13:11:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39631 states, 29347 states have (on average 1.4818209697754456) internal successors, (43487), 29351 states have internal predecessors, (43487), 10254 states have call successors, (10254), 29 states have call predecessors, (10254), 29 states have return successors, (10253), 10252 states have call predecessors, (10253), 10253 states have call successors, (10253) [2022-12-14 13:11:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39631 states to 39631 states and 63994 transitions. [2022-12-14 13:11:57,913 INFO L78 Accepts]: Start accepts. Automaton has 39631 states and 63994 transitions. Word has length 96 [2022-12-14 13:11:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:57,913 INFO L495 AbstractCegarLoop]: Abstraction has 39631 states and 63994 transitions. [2022-12-14 13:11:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:11:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 39631 states and 63994 transitions. [2022-12-14 13:11:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 13:11:57,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:57,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 13:11:57,933 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash -850831069, now seen corresponding path program 1 times [2022-12-14 13:11:57,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:57,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118872089] [2022-12-14 13:11:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:11:57,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:57,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118872089] [2022-12-14 13:11:57,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118872089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:57,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:57,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:57,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798151701] [2022-12-14 13:11:57,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:57,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:57,986 INFO L87 Difference]: Start difference. First operand 39631 states and 63994 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:12:01,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:01,236 INFO L93 Difference]: Finished difference Result 73226 states and 118415 transitions. [2022-12-14 13:12:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:12:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-12-14 13:12:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:01,473 INFO L225 Difference]: With dead ends: 73226 [2022-12-14 13:12:01,473 INFO L226 Difference]: Without dead ends: 73079 [2022-12-14 13:12:01,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:12:01,499 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 39 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:01,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 554 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:12:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73079 states. [2022-12-14 13:12:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73079 to 73074. [2022-12-14 13:12:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73074 states, 54422 states have (on average 1.467954136194921) internal successors, (79889), 54426 states have internal predecessors, (79889), 18622 states have call successors, (18622), 29 states have call predecessors, (18622), 29 states have return successors, (18621), 18620 states have call predecessors, (18621), 18621 states have call successors, (18621) [2022-12-14 13:12:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73074 states to 73074 states and 117132 transitions. [2022-12-14 13:12:05,245 INFO L78 Accepts]: Start accepts. Automaton has 73074 states and 117132 transitions. Word has length 97 [2022-12-14 13:12:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:05,245 INFO L495 AbstractCegarLoop]: Abstraction has 73074 states and 117132 transitions. [2022-12-14 13:12:05,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 13:12:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 73074 states and 117132 transitions. [2022-12-14 13:12:05,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 13:12:05,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:05,266 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:05,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 13:12:05,266 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:05,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash 204934613, now seen corresponding path program 1 times [2022-12-14 13:12:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:05,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004099282] [2022-12-14 13:12:05,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:05,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:12:06,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:06,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004099282] [2022-12-14 13:12:06,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004099282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:12:06,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:12:06,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 13:12:06,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220031767] [2022-12-14 13:12:06,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:12:06,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 13:12:06,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 13:12:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-12-14 13:12:06,247 INFO L87 Difference]: Start difference. First operand 73074 states and 117132 transitions. Second operand has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 13:12:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:11,886 INFO L93 Difference]: Finished difference Result 73301 states and 117477 transitions. [2022-12-14 13:12:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 13:12:11,886 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 98 [2022-12-14 13:12:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:12,103 INFO L225 Difference]: With dead ends: 73301 [2022-12-14 13:12:12,103 INFO L226 Difference]: Without dead ends: 73297 [2022-12-14 13:12:12,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 13:12:12,128 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 609 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 4013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:12,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 4956 Invalid, 4013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 13:12:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73297 states. [2022-12-14 13:12:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73297 to 73175. [2022-12-14 13:12:16,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73175 states, 54477 states have (on average 1.4676836095967105) internal successors, (79955), 54484 states have internal predecessors, (79955), 18664 states have call successors, (18664), 34 states have call predecessors, (18664), 33 states have return successors, (18661), 18660 states have call predecessors, (18661), 18661 states have call successors, (18661) [2022-12-14 13:12:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73175 states to 73175 states and 117280 transitions. [2022-12-14 13:12:16,345 INFO L78 Accepts]: Start accepts. Automaton has 73175 states and 117280 transitions. Word has length 98 [2022-12-14 13:12:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:16,345 INFO L495 AbstractCegarLoop]: Abstraction has 73175 states and 117280 transitions. [2022-12-14 13:12:16,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 13:12:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 73175 states and 117280 transitions. [2022-12-14 13:12:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-14 13:12:16,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:16,476 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:16,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 13:12:16,476 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1414853207, now seen corresponding path program 1 times [2022-12-14 13:12:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:16,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024075688] [2022-12-14 13:12:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 13:12:16,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:16,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024075688] [2022-12-14 13:12:16,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024075688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:12:16,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:12:16,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:12:16,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590580343] [2022-12-14 13:12:16,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:12:16,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:12:16,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:16,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:12:16,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:12:16,716 INFO L87 Difference]: Start difference. First operand 73175 states and 117280 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-14 13:12:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:21,130 INFO L93 Difference]: Finished difference Result 73476 states and 117669 transitions. [2022-12-14 13:12:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:12:21,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 162 [2022-12-14 13:12:21,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:21,335 INFO L225 Difference]: With dead ends: 73476 [2022-12-14 13:12:21,335 INFO L226 Difference]: Without dead ends: 73336 [2022-12-14 13:12:21,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:12:21,361 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 276 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:21,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 583 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 13:12:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73336 states. [2022-12-14 13:12:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73336 to 73290. [2022-12-14 13:12:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73290 states, 54540 states have (on average 1.4673450678401174) internal successors, (80029), 54552 states have internal predecessors, (80029), 18698 states have call successors, (18698), 51 states have call predecessors, (18698), 51 states have return successors, (18697), 18692 states have call predecessors, (18697), 18695 states have call successors, (18697) [2022-12-14 13:12:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73290 states to 73290 states and 117424 transitions. [2022-12-14 13:12:25,895 INFO L78 Accepts]: Start accepts. Automaton has 73290 states and 117424 transitions. Word has length 162 [2022-12-14 13:12:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:25,896 INFO L495 AbstractCegarLoop]: Abstraction has 73290 states and 117424 transitions. [2022-12-14 13:12:25,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-14 13:12:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 73290 states and 117424 transitions. [2022-12-14 13:12:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-14 13:12:26,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:26,045 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:26,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 13:12:26,045 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:26,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:26,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1182242307, now seen corresponding path program 1 times [2022-12-14 13:12:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:26,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576600088] [2022-12-14 13:12:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:26,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 13:12:26,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576600088] [2022-12-14 13:12:26,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576600088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:12:26,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:12:26,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 13:12:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453682572] [2022-12-14 13:12:26,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:12:26,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 13:12:26,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 13:12:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-12-14 13:12:26,941 INFO L87 Difference]: Start difference. First operand 73290 states and 117424 transitions. Second operand has 22 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 13 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (31), 14 states have call predecessors, (31), 13 states have call successors, (31) [2022-12-14 13:12:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:34,124 INFO L93 Difference]: Finished difference Result 74580 states and 119286 transitions. [2022-12-14 13:12:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-14 13:12:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 13 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (31), 14 states have call predecessors, (31), 13 states have call successors, (31) Word has length 173 [2022-12-14 13:12:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:34,316 INFO L225 Difference]: With dead ends: 74580 [2022-12-14 13:12:34,316 INFO L226 Difference]: Without dead ends: 74000 [2022-12-14 13:12:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=574, Invalid=3848, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 13:12:34,336 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1267 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 5823 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 6919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 5823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 2592 Invalid, 6919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 5823 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 13:12:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74000 states. [2022-12-14 13:12:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74000 to 73908. [2022-12-14 13:12:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73908 states, 54894 states have (on average 1.4655153568696033) internal successors, (80448), 54918 states have internal predecessors, (80448), 18921 states have call successors, (18921), 87 states have call predecessors, (18921), 92 states have return successors, (18931), 18906 states have call predecessors, (18931), 18913 states have call successors, (18931) [2022-12-14 13:12:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73908 states to 73908 states and 118300 transitions. [2022-12-14 13:12:39,226 INFO L78 Accepts]: Start accepts. Automaton has 73908 states and 118300 transitions. Word has length 173 [2022-12-14 13:12:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:39,227 INFO L495 AbstractCegarLoop]: Abstraction has 73908 states and 118300 transitions. [2022-12-14 13:12:39,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 13 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (31), 14 states have call predecessors, (31), 13 states have call successors, (31) [2022-12-14 13:12:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 73908 states and 118300 transitions. [2022-12-14 13:12:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-14 13:12:39,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:39,380 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:39,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 13:12:39,381 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1440061192, now seen corresponding path program 1 times [2022-12-14 13:12:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:39,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155017758] [2022-12-14 13:12:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 13:12:41,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:41,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155017758] [2022-12-14 13:12:41,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155017758] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:12:41,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631034985] [2022-12-14 13:12:41,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:41,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:12:41,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:12:41,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:12:41,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:12:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:41,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-14 13:12:41,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:12:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:12:43,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:12:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 13:12:49,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631034985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:12:49,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [425268499] [2022-12-14 13:12:49,705 INFO L159 IcfgInterpreter]: Started Sifa with 128 locations of interest [2022-12-14 13:12:49,705 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:12:49,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:12:49,706 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:12:49,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:13:37,492 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 13:13:37,778 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 263 for LOIs [2022-12-14 13:13:40,304 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 13:13:40,588 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 538 for LOIs [2022-12-14 13:13:50,294 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 248 for LOIs [2022-12-14 13:14:23,096 INFO L197 IcfgInterpreter]: Interpreting procedure queue with input of size 402 for LOIs [2022-12-14 13:14:23,309 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 208 for LOIs [2022-12-14 13:14:23,829 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 208 for LOIs [2022-12-14 13:14:23,855 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 208 for LOIs [2022-12-14 13:14:23,885 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 212 for LOIs [2022-12-14 13:14:23,935 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 208 for LOIs [2022-12-14 13:14:23,963 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 208 for LOIs [2022-12-14 13:14:23,990 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 396 for LOIs [2022-12-14 13:14:24,204 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 472 for LOIs [2022-12-14 13:14:25,748 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 208 for LOIs [2022-12-14 13:14:25,774 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 208 for LOIs [2022-12-14 13:14:25,804 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:17:00,358 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 538 DAG size of output: 416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:17:09,210 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 550 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:18:15,835 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 585 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:19:20,210 WARN L233 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 688 DAG size of output: 520 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:19:28,989 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 721 DAG size of output: 522 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:19:57,041 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1417398#(and (= ~__ste_Client_Keyring1_User2~0 0) (<= |outgoing__wrappee__AutoResponder_~tmp~16#1| 2147483647) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= ~queued_message~0 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~msg#1| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 2147483648)) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 2147483647) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 2147483648)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_~receiver~0#1| 2147483648)) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 2147483648)) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1| 2147483647) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~15#1| 2147483648)) (<= ~__ste_client_idCounter2~0 3) (= ~__ste_email_body1~0.offset 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~6#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~15#1| 2147483647) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~queued_client~0)| 2147483647) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 2147483647) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= 0 (+ ~queued_client~0 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 2147483648)) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 2147483647) (<= ~queue_empty~0 1) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 2147483648)) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 2147483648)) (<= 0 (+ ~queued_message~0 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_#in~msg#1|)) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 |old(~queue_empty~0)|) (= ~__SELECTED_FEATURE_Forward~0 0) (= ~__ste_Client_Keyring0_User0~0 0) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 2147483647) (= ~__ste_email_body0~0.base 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 2147483647) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 2147483647) (= ~__ste_email_id0~0 0) (<= 0 ~queue_empty~0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 2147483647) (= ~__ste_Client_AddressBook2_Address1~0 0) (= ~bob~0 1) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~26#1| 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 2147483647) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= ~__ste_client_outbuffer0~0 0) (<= 0 (+ |old(~queued_client~0)| 2147483648)) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Base~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_~tmp~16#1| 2147483648)) (<= 0 (+ |old(~queued_message~0)| 2147483648)) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_~tmp___0~6#1| 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 2147483647) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 2147483647) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 2147483647) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 2147483648)) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_~msg#1| 2147483648)) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2147483647) (<= |old(~queued_message~0)| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 2147483648)) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 2147483647) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~queued_client~0 2147483647) (<= |outgoing__wrappee__AutoResponder_~client#1| 2147483647) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_mail_#in~client#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 2147483647) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~30#1| 2147483648)) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~30#1| 2147483647) (= |#NULL.base| 0) (<= 0 (+ 2147483648 |outgoing__wrappee__AutoResponder_#in~client#1|)) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 2147483647))' at error location [2022-12-14 13:19:57,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:19:57,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:19:57,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 21, 23] total 72 [2022-12-14 13:19:57,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65282890] [2022-12-14 13:19:57,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:19:57,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-14 13:19:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:19:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-14 13:19:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1977, Invalid=31329, Unknown=0, NotChecked=0, Total=33306 [2022-12-14 13:19:57,048 INFO L87 Difference]: Start difference. First operand 73908 states and 118300 transitions. Second operand has 72 states, 53 states have (on average 4.867924528301887) internal successors, (258), 59 states have internal predecessors, (258), 40 states have call successors, (90), 9 states have call predecessors, (90), 23 states have return successors, (88), 48 states have call predecessors, (88), 40 states have call successors, (88) [2022-12-14 13:20:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:20:51,727 INFO L93 Difference]: Finished difference Result 129783 states and 206843 transitions. [2022-12-14 13:20:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-12-14 13:20:51,728 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 53 states have (on average 4.867924528301887) internal successors, (258), 59 states have internal predecessors, (258), 40 states have call successors, (90), 9 states have call predecessors, (90), 23 states have return successors, (88), 48 states have call predecessors, (88), 40 states have call successors, (88) Word has length 178 [2022-12-14 13:20:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:20:52,111 INFO L225 Difference]: With dead ends: 129783 [2022-12-14 13:20:52,111 INFO L226 Difference]: Without dead ends: 129313 [2022-12-14 13:20:52,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 380 SyntacticMatches, 9 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43538 ImplicationChecksByTransitivity, 351.0s TimeCoverageRelationStatistics Valid=6323, Invalid=109617, Unknown=0, NotChecked=0, Total=115940 [2022-12-14 13:20:52,161 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 6212 mSDsluCounter, 4338 mSDsCounter, 0 mSdLazyCounter, 24919 mSolverCounterSat, 5512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6212 SdHoareTripleChecker+Valid, 4501 SdHoareTripleChecker+Invalid, 30431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5512 IncrementalHoareTripleChecker+Valid, 24919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:20:52,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6212 Valid, 4501 Invalid, 30431 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5512 Valid, 24919 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-12-14 13:20:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129313 states. [2022-12-14 13:21:14,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129313 to 125574. [2022-12-14 13:21:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125574 states, 93398 states have (on average 1.4604274181459989) internal successors, (136401), 93509 states have internal predecessors, (136401), 31805 states have call successors, (31805), 344 states have call predecessors, (31805), 370 states have return successors, (31869), 31736 states have call predecessors, (31869), 31773 states have call successors, (31869) [2022-12-14 13:21:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125574 states to 125574 states and 200075 transitions. [2022-12-14 13:21:14,891 INFO L78 Accepts]: Start accepts. Automaton has 125574 states and 200075 transitions. Word has length 178 [2022-12-14 13:21:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:21:14,891 INFO L495 AbstractCegarLoop]: Abstraction has 125574 states and 200075 transitions. [2022-12-14 13:21:14,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 53 states have (on average 4.867924528301887) internal successors, (258), 59 states have internal predecessors, (258), 40 states have call successors, (90), 9 states have call predecessors, (90), 23 states have return successors, (88), 48 states have call predecessors, (88), 40 states have call successors, (88) [2022-12-14 13:21:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 125574 states and 200075 transitions. [2022-12-14 13:21:15,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-14 13:21:15,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:21:15,273 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:21:15,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 13:21:15,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77a95a-5e1d-4f6b-8970-d07ed2234726/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 13:21:15,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:21:15,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:21:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1294025991, now seen corresponding path program 1 times [2022-12-14 13:21:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:21:15,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274842648] [2022-12-14 13:21:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:21:15,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:21:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:21:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 13:21:15,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:21:15,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274842648] [2022-12-14 13:21:15,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274842648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:21:15,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:21:15,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:21:15,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018040988] [2022-12-14 13:21:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:21:15,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:21:15,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:21:15,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:21:15,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:21:15,600 INFO L87 Difference]: Start difference. First operand 125574 states and 200075 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-12-14 13:21:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:21:28,754 INFO L93 Difference]: Finished difference Result 165623 states and 264399 transitions. [2022-12-14 13:21:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:21:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 185 [2022-12-14 13:21:28,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:21:28,991 INFO L225 Difference]: With dead ends: 165623 [2022-12-14 13:21:28,991 INFO L226 Difference]: Without dead ends: 85890 [2022-12-14 13:21:29,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:21:29,102 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 56 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:21:29,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 645 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:21:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85890 states. [2022-12-14 13:21:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85890 to 85890. [2022-12-14 13:21:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85890 states, 63500 states have (on average 1.4391968503937007) internal successors, (91389), 63611 states have internal predecessors, (91389), 22019 states have call successors, (22019), 344 states have call predecessors, (22019), 370 states have return successors, (22083), 21950 states have call predecessors, (22083), 21987 states have call successors, (22083) [2022-12-14 13:21:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85890 states to 85890 states and 135491 transitions. [2022-12-14 13:21:42,787 INFO L78 Accepts]: Start accepts. Automaton has 85890 states and 135491 transitions. Word has length 185 [2022-12-14 13:21:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:21:42,787 INFO L495 AbstractCegarLoop]: Abstraction has 85890 states and 135491 transitions. [2022-12-14 13:21:42,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-12-14 13:21:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 85890 states and 135491 transitions. [2022-12-14 13:21:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-12-14 13:21:42,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:21:42,977 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:21:42,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 13:21:42,977 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:21:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:21:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1015691568, now seen corresponding path program 1 times [2022-12-14 13:21:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:21:42,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180791020] [2022-12-14 13:21:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:21:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:21:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat