./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW --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 b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c --- 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-4e7fbc6 [2022-11-23 15:17:14,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:17:14,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:17:14,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:17:14,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:17:14,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:17:14,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:17:14,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:17:14,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:17:14,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:17:14,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:17:14,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:17:14,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:17:14,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:17:14,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:17:14,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:17:14,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:17:14,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:17:14,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:17:14,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:17:14,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:17:14,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:17:14,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:17:14,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:17:14,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:17:14,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:17:14,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:17:14,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:17:14,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:17:14,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:17:14,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:17:14,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:17:14,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:17:14,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:17:14,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:17:14,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:17:14,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:17:14,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:17:14,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:17:14,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:17:14,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:17:14,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:17:14,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:17:14,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:17:14,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:17:14,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:17:14,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:17:14,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:17:14,955 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:17:14,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:17:14,955 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:17:14,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:17:14,956 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:17:14,956 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:17:14,957 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:17:14,957 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:17:14,957 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:17:14,957 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:17:14,957 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:17:14,958 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:17:14,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:17:14,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:17:14,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:17:14,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:17:14,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:17:14,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:17:14,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:17:14,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:17:14,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:17:14,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:17:14,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:17:14,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:17:14,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:17:14,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:17:14,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:17:14,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:17:14,962 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:17:14,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:17:14,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:17:14,963 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:17:14,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:17:14,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:17:14,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:17:14,963 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_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c [2022-11-23 15:17:15,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:17:15,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:17:15,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:17:15,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:17:15,265 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:17:15,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2022-11-23 15:17:18,266 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:17:18,629 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:17:18,629 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2022-11-23 15:17:18,645 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/data/d56c4a6bf/2434254637654e96b149adac13658047/FLAG484f164ec [2022-11-23 15:17:18,660 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/data/d56c4a6bf/2434254637654e96b149adac13658047 [2022-11-23 15:17:18,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:17:18,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:17:18,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:17:18,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:17:18,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:17:18,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:18" (1/1) ... [2022-11-23 15:17:18,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730a37c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:18, skipping insertion in model container [2022-11-23 15:17:18,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:18" (1/1) ... [2022-11-23 15:17:18,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:17:18,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:17:18,897 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_e332ee74-ae18-48f3-894b-66dfa02805e8/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2022-11-23 15:17:19,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:17:19,354 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:17:19,374 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_e332ee74-ae18-48f3-894b-66dfa02805e8/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2022-11-23 15:17:19,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:17:19,488 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:17:19,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19 WrapperNode [2022-11-23 15:17:19,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:17:19,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:17:19,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:17:19,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:17:19,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,569 INFO L138 Inliner]: procedures = 128, calls = 214, calls flagged for inlining = 54, calls inlined = 49, statements flattened = 973 [2022-11-23 15:17:19,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:17:19,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:17:19,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:17:19,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:17:19,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:17:19,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:17:19,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:17:19,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:17:19,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (1/1) ... [2022-11-23 15:17:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:17:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:19,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:17:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 15:17:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 15:17:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:17:19,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:17:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 15:17:19,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 15:17:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:17:19,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:17:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:17:19,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:17:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:17:19,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:17:19,783 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:17:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:17:19,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:17:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:17:19,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:17:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:17:19,784 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:17:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:17:19,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:17:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:17:19,785 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:17:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:17:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:17:19,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:17:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:17:19,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:17:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:17:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 15:17:19,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 15:17:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:17:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:17:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:17:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:17:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:17:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:17:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:17:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:17:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:17:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:17:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:17:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:17:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:17:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:17:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:17:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:17:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:17:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 15:17:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 15:17:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:17:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:17:20,090 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:17:20,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:17:21,053 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:17:21,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:17:21,582 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:17:21,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:21 BoogieIcfgContainer [2022-11-23 15:17:21,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:17:21,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:17:21,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:17:21,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:17:21,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:17:18" (1/3) ... [2022-11-23 15:17:21,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cedf1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:21, skipping insertion in model container [2022-11-23 15:17:21,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:19" (2/3) ... [2022-11-23 15:17:21,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cedf1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:21, skipping insertion in model container [2022-11-23 15:17:21,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:21" (3/3) ... [2022-11-23 15:17:21,594 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.c [2022-11-23 15:17:21,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:17:21,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:17:21,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:17:21,689 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;@7725b144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:17:21,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:17:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-23 15:17:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:17:21,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:21,708 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] [2022-11-23 15:17:21,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:21,714 INFO L85 PathProgramCache]: Analyzing trace with hash -907500454, now seen corresponding path program 1 times [2022-11-23 15:17:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:21,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386671131] [2022-11-23 15:17:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:17:22,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:22,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386671131] [2022-11-23 15:17:22,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386671131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:22,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:22,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:17:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895590092] [2022-11-23 15:17:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:22,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:17:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:17:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:17:22,223 INFO L87 Difference]: Start difference. First operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:17:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:22,444 INFO L93 Difference]: Finished difference Result 272 states and 361 transitions. [2022-11-23 15:17:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:17:22,447 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-11-23 15:17:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:22,462 INFO L225 Difference]: With dead ends: 272 [2022-11-23 15:17:22,462 INFO L226 Difference]: Without dead ends: 179 [2022-11-23 15:17:22,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:17:22,471 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:22,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:22,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-23 15:17:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-23 15:17:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 101 states have (on average 1.297029702970297) internal successors, (131), 105 states have internal predecessors, (131), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-23 15:17:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 238 transitions. [2022-11-23 15:17:22,560 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 238 transitions. Word has length 73 [2022-11-23 15:17:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:22,563 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 238 transitions. [2022-11-23 15:17:22,565 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:17:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 238 transitions. [2022-11-23 15:17:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:17:22,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:22,580 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] [2022-11-23 15:17:22,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:17:22,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1076798138, now seen corresponding path program 1 times [2022-11-23 15:17:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:22,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211165695] [2022-11-23 15:17:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:17:22,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:22,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211165695] [2022-11-23 15:17:22,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211165695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:22,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:22,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:22,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943025966] [2022-11-23 15:17:22,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:22,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:22,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:22,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:22,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:22,960 INFO L87 Difference]: Start difference. First operand 179 states and 238 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:17:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:23,073 INFO L93 Difference]: Finished difference Result 268 states and 346 transitions. [2022-11-23 15:17:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:23,074 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-23 15:17:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:23,076 INFO L225 Difference]: With dead ends: 268 [2022-11-23 15:17:23,076 INFO L226 Difference]: Without dead ends: 181 [2022-11-23 15:17:23,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:23,079 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:23,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:17:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-23 15:17:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-23 15:17:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 107 states have internal predecessors, (133), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-23 15:17:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 240 transitions. [2022-11-23 15:17:23,096 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 240 transitions. Word has length 74 [2022-11-23 15:17:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:23,097 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 240 transitions. [2022-11-23 15:17:23,097 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:17:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 240 transitions. [2022-11-23 15:17:23,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 15:17:23,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:23,099 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] [2022-11-23 15:17:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:17:23,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:23,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:23,100 INFO L85 PathProgramCache]: Analyzing trace with hash 908099707, now seen corresponding path program 1 times [2022-11-23 15:17:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:23,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637531006] [2022-11-23 15:17:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:23,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:17:23,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:23,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637531006] [2022-11-23 15:17:23,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637531006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:23,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:23,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754299577] [2022-11-23 15:17:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:23,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:23,233 INFO L87 Difference]: Start difference. First operand 181 states and 240 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:17:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:23,413 INFO L93 Difference]: Finished difference Result 397 states and 547 transitions. [2022-11-23 15:17:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:23,414 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-23 15:17:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:23,416 INFO L225 Difference]: With dead ends: 397 [2022-11-23 15:17:23,416 INFO L226 Difference]: Without dead ends: 234 [2022-11-23 15:17:23,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:23,418 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 59 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:23,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 418 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:17:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-23 15:17:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2022-11-23 15:17:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 141 states have internal predecessors, (188), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-23 15:17:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2022-11-23 15:17:23,451 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 79 [2022-11-23 15:17:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:23,453 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2022-11-23 15:17:23,454 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:17:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2022-11-23 15:17:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 15:17:23,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:23,458 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] [2022-11-23 15:17:23,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:17:23,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash 889440703, now seen corresponding path program 1 times [2022-11-23 15:17:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:23,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494131020] [2022-11-23 15:17:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:17:23,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:23,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494131020] [2022-11-23 15:17:23,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494131020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:17:23,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571780976] [2022-11-23 15:17:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:23,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:17:23,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:23,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:17:23,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:17:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:24,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:17:24,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:17:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:17:24,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:17:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:17:24,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571780976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:17:24,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1157447705] [2022-11-23 15:17:24,242 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-23 15:17:24,246 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:17:24,253 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:17:24,259 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:17:24,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:18:05,964 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 15:18:06,327 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:18:06,821 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-23 15:18:09,197 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 15:18:09,269 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 257 for LOIs [2022-11-23 15:18:10,254 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 264 for LOIs [2022-11-23 15:18:21,473 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-11-23 15:18:22,454 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-11-23 15:18:22,499 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 436 for LOIs [2022-11-23 15:18:23,165 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-23 15:18:29,466 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 229 for LOIs [2022-11-23 15:18:29,506 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:19:06,457 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 476 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:13,965 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 486 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:26,845 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 508 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:42,965 WARN L233 SmtUtils]: Spent 15.78s on a formula simplification. DAG size of input: 583 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:06,763 WARN L233 SmtUtils]: Spent 13.78s on a formula simplification. DAG size of input: 469 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:13,874 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 491 DAG size of output: 272 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:47,191 WARN L233 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 436 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:59,816 WARN L233 SmtUtils]: Spent 11.97s on a formula simplification. DAG size of input: 455 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:21,913 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 544 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:21:59,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3203#(and (= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~msg#1|) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~17#1| 2147483648)) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~2#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1|) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~userid#1| 2) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1| 1) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1| 2) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~17#1| 2147483647) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |outgoing__wrappee__AutoResponder_autoRespond_~client#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_deliver_~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~tmp~8#1| 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~handle#1| 1) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 2 |outgoing__wrappee__AutoResponder_findPublicKey_#in~userid#1|) (= ~__ste_client_name2~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1|) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_#res#1| 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1| 1) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1| 1) (= ~__ste_email_body1~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_findPublicKey_~userid#1|) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#res#1| 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~client#1| 2) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_deliver_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1| 2) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= |outgoing__wrappee__AutoResponder_deliver_#in~client#1| 2) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~9#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1|) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_incoming_~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_findPublicKey_#in~handle#1|) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (= ~__ste_email_signKey0~0 0) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~client#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (<= |outgoing__wrappee__AutoResponder_~tmp~11#1| 2) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1| 1) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~tmp~13#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (= ~__ste_email_isSigned0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_deliver_~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#in~userid#1| 2) (= ~__ste_email_isSigned1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~msg#1|) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1| 2) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~msg#1|) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_#in~handle#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~9#1| 2) (= 3 ~chuck~0) (<= 0 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~9#1|) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 1 ~queue_empty~0) (<= 2 |outgoing__wrappee__AutoResponder_getClientPrivateKey_~handle#1|) (<= |outgoing__wrappee__AutoResponder_incoming_~tmp~14#1| 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1| 2) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_deliver_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= 1 |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__AutoResponder_deliver_~client#1| 2) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1| 2) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~retValue_acc~15#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) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1| 1) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 2 |outgoing__wrappee__AutoResponder_deliver_#in~client#1|) (= ~__ste_client_name2~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~10#1| 2147483648)) (<= 2 |outgoing__wrappee__AutoResponder_getClientPrivateKey_#in~handle#1|) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1|) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1| 2) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~msg#1| 1) (<= |old(~queue_empty~0)| 1) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1| 1) (= ~__ste_Client_Keyring2_User2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~9#1| 1) (= ~head~0.base 0) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_~retValue_acc~10#1| 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (<= 0 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~tmp~13#1|) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#in~handle#1| 1) (<= 0 |outgoing__wrappee__AutoResponder_getClientPrivateKey_~retValue_acc~10#1|) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_findPublicKey_~retValue_acc~15#1|) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_~handle#1| 2) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= ~__ste_client_privateKey1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~11#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~10#1| 2147483647) (<= 0 |outgoing__wrappee__AutoResponder_findPublicKey_#res#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 |outgoing__wrappee__AutoResponder_getClientPrivateKey_#res#1|) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_deliver_#in~msg#1| 1) (<= 2 ~__ste_email_to0~0) (<= 0 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1| 1) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 0 |outgoing__wrappee__AutoResponder_incoming_~tmp~14#1|) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1|) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1| 2) (= ~__ste_email_body1~0.base 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1|) (= ~__ste_ClientKeyring_size2~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1| 2) (<= 0 ~__ste_email_encryptionKey0~0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~2#1| 0) (= |#NULL.base| 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~msg#1| 1) (<= 0 ~__ste_client_privateKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_findPublicKey_~handle#1|) (= ~__ste_email_signKey1~0 0) (<= ~queued_client~0 0))' at error location [2022-11-23 15:21:59,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:21:59,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:21:59,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 15:21:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268168949] [2022-11-23 15:21:59,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:21:59,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:21:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:21:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3973, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 15:21:59,335 INFO L87 Difference]: Start difference. First operand 229 states and 323 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 15:21:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:59,713 INFO L93 Difference]: Finished difference Result 591 states and 896 transitions. [2022-11-23 15:21:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:21:59,723 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 80 [2022-11-23 15:21:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:59,731 INFO L225 Difference]: With dead ends: 591 [2022-11-23 15:21:59,731 INFO L226 Difference]: Without dead ends: 504 [2022-11-23 15:21:59,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 209.8s TimeCoverageRelationStatistics Valid=187, Invalid=3973, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 15:21:59,735 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 221 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:59,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 885 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:21:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-23 15:21:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 489. [2022-11-23 15:21:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 318 states have (on average 1.490566037735849) internal successors, (474), 322 states have internal predecessors, (474), 147 states have call successors, (147), 23 states have call predecessors, (147), 23 states have return successors, (146), 145 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-23 15:21:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 767 transitions. [2022-11-23 15:21:59,810 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 767 transitions. Word has length 80 [2022-11-23 15:21:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:59,811 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 767 transitions. [2022-11-23 15:21:59,811 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 15:21:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 767 transitions. [2022-11-23 15:21:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 15:21:59,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:59,815 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] [2022-11-23 15:21:59,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:22:00,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e332ee74-ae18-48f3-894b-66dfa02805e8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:22:00,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1628636535, now seen corresponding path program 1 times [2022-11-23 15:22:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:00,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598439084] [2022-11-23 15:22:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:00,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:00,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598439084] [2022-11-23 15:22:00,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598439084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:00,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:00,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:00,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606309086] [2022-11-23 15:22:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:00,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:00,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:00,120 INFO L87 Difference]: Start difference. First operand 489 states and 767 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:00,266 INFO L93 Difference]: Finished difference Result 1208 states and 1932 transitions. [2022-11-23 15:22:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:00,267 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2022-11-23 15:22:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:00,274 INFO L225 Difference]: With dead ends: 1208 [2022-11-23 15:22:00,274 INFO L226 Difference]: Without dead ends: 751 [2022-11-23 15:22:00,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:00,278 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:00,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 431 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-23 15:22:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 746. [2022-11-23 15:22:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 496 states have (on average 1.5060483870967742) internal successors, (747), 500 states have internal predecessors, (747), 226 states have call successors, (226), 23 states have call predecessors, (226), 23 states have return successors, (225), 224 states have call predecessors, (225), 225 states have call successors, (225) [2022-11-23 15:22:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1198 transitions. [2022-11-23 15:22:00,342 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1198 transitions. Word has length 86 [2022-11-23 15:22:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:00,343 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1198 transitions. [2022-11-23 15:22:00,343 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1198 transitions. [2022-11-23 15:22:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 15:22:00,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:00,348 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] [2022-11-23 15:22:00,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:22:00,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2090965858, now seen corresponding path program 1 times [2022-11-23 15:22:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:00,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104006520] [2022-11-23 15:22:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:00,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:00,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104006520] [2022-11-23 15:22:00,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104006520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:00,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:00,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:00,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339937232] [2022-11-23 15:22:00,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:00,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:00,449 INFO L87 Difference]: Start difference. First operand 746 states and 1198 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:00,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:00,597 INFO L93 Difference]: Finished difference Result 1830 states and 2979 transitions. [2022-11-23 15:22:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:00,597 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2022-11-23 15:22:00,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:00,615 INFO L225 Difference]: With dead ends: 1830 [2022-11-23 15:22:00,616 INFO L226 Difference]: Without dead ends: 1146 [2022-11-23 15:22:00,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:00,619 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 55 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:00,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 417 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-11-23 15:22:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1141. [2022-11-23 15:22:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 772 states have (on average 1.511658031088083) internal successors, (1167), 776 states have internal predecessors, (1167), 345 states have call successors, (345), 23 states have call predecessors, (345), 23 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-23 15:22:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1856 transitions. [2022-11-23 15:22:00,690 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1856 transitions. Word has length 87 [2022-11-23 15:22:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:00,691 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1856 transitions. [2022-11-23 15:22:00,691 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1856 transitions. [2022-11-23 15:22:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 15:22:00,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:00,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:00,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:22:00,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash -30321125, now seen corresponding path program 1 times [2022-11-23 15:22:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:00,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741999310] [2022-11-23 15:22:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:00,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:00,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:00,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741999310] [2022-11-23 15:22:00,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741999310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:00,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:00,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:00,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763840910] [2022-11-23 15:22:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:00,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:00,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:00,809 INFO L87 Difference]: Start difference. First operand 1141 states and 1856 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:01,003 INFO L93 Difference]: Finished difference Result 2733 states and 4491 transitions. [2022-11-23 15:22:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:01,004 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2022-11-23 15:22:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:01,016 INFO L225 Difference]: With dead ends: 2733 [2022-11-23 15:22:01,016 INFO L226 Difference]: Without dead ends: 1734 [2022-11-23 15:22:01,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:01,021 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 53 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:01,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 411 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:01,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-11-23 15:22:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1729. [2022-11-23 15:22:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1198 states have (on average 1.515025041736227) internal successors, (1815), 1202 states have internal predecessors, (1815), 507 states have call successors, (507), 23 states have call predecessors, (507), 23 states have return successors, (506), 505 states have call predecessors, (506), 506 states have call successors, (506) [2022-11-23 15:22:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2828 transitions. [2022-11-23 15:22:01,142 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2828 transitions. Word has length 88 [2022-11-23 15:22:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:01,142 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2828 transitions. [2022-11-23 15:22:01,142 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2828 transitions. [2022-11-23 15:22:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 15:22:01,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:01,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:01,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:22:01,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1897243903, now seen corresponding path program 1 times [2022-11-23 15:22:01,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:01,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173470959] [2022-11-23 15:22:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:01,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:01,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:01,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173470959] [2022-11-23 15:22:01,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173470959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:01,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:01,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:01,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943797715] [2022-11-23 15:22:01,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:01,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:01,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:01,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:01,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:01,282 INFO L87 Difference]: Start difference. First operand 1729 states and 2828 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:01,544 INFO L93 Difference]: Finished difference Result 4118 states and 6799 transitions. [2022-11-23 15:22:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:01,545 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2022-11-23 15:22:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:01,559 INFO L225 Difference]: With dead ends: 4118 [2022-11-23 15:22:01,559 INFO L226 Difference]: Without dead ends: 2668 [2022-11-23 15:22:01,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:01,565 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 51 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:01,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 411 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2022-11-23 15:22:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2663. [2022-11-23 15:22:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 1887 states have (on average 1.516163222045575) internal successors, (2861), 1891 states have internal predecessors, (2861), 752 states have call successors, (752), 23 states have call predecessors, (752), 23 states have return successors, (751), 750 states have call predecessors, (751), 751 states have call successors, (751) [2022-11-23 15:22:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 4364 transitions. [2022-11-23 15:22:01,775 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 4364 transitions. Word has length 89 [2022-11-23 15:22:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:01,776 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 4364 transitions. [2022-11-23 15:22:01,776 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 4364 transitions. [2022-11-23 15:22:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 15:22:01,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:01,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:01,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:22:01,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:01,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1727987263, now seen corresponding path program 1 times [2022-11-23 15:22:01,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:01,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040528786] [2022-11-23 15:22:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:01,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:01,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040528786] [2022-11-23 15:22:01,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040528786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:01,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:01,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415614249] [2022-11-23 15:22:01,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:01,880 INFO L87 Difference]: Start difference. First operand 2663 states and 4364 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:02,252 INFO L93 Difference]: Finished difference Result 6634 states and 10959 transitions. [2022-11-23 15:22:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:02,253 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2022-11-23 15:22:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:02,279 INFO L225 Difference]: With dead ends: 6634 [2022-11-23 15:22:02,280 INFO L226 Difference]: Without dead ends: 4393 [2022-11-23 15:22:02,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:02,289 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 49 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:02,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 429 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2022-11-23 15:22:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 4388. [2022-11-23 15:22:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 3119 states have (on average 1.504969541519718) internal successors, (4694), 3123 states have internal predecessors, (4694), 1245 states have call successors, (1245), 23 states have call predecessors, (1245), 23 states have return successors, (1244), 1243 states have call predecessors, (1244), 1244 states have call successors, (1244) [2022-11-23 15:22:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7183 transitions. [2022-11-23 15:22:02,658 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7183 transitions. Word has length 90 [2022-11-23 15:22:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:02,659 INFO L495 AbstractCegarLoop]: Abstraction has 4388 states and 7183 transitions. [2022-11-23 15:22:02,659 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7183 transitions. [2022-11-23 15:22:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 15:22:02,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:02,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:02,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:22:02,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1376828125, now seen corresponding path program 1 times [2022-11-23 15:22:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:02,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126910254] [2022-11-23 15:22:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:02,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:02,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:02,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126910254] [2022-11-23 15:22:02,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126910254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:02,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:02,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:02,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134809205] [2022-11-23 15:22:02,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:02,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:02,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:02,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:02,764 INFO L87 Difference]: Start difference. First operand 4388 states and 7183 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:03,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:03,315 INFO L93 Difference]: Finished difference Result 11050 states and 18244 transitions. [2022-11-23 15:22:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:03,316 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 91 [2022-11-23 15:22:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:03,358 INFO L225 Difference]: With dead ends: 11050 [2022-11-23 15:22:03,359 INFO L226 Difference]: Without dead ends: 7350 [2022-11-23 15:22:03,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:03,373 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 47 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:03,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 417 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2022-11-23 15:22:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7345. [2022-11-23 15:22:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7345 states, 5254 states have (on average 1.4996193376475067) internal successors, (7879), 5258 states have internal predecessors, (7879), 2067 states have call successors, (2067), 23 states have call predecessors, (2067), 23 states have return successors, (2066), 2065 states have call predecessors, (2066), 2066 states have call successors, (2066) [2022-11-23 15:22:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7345 states to 7345 states and 12012 transitions. [2022-11-23 15:22:04,163 INFO L78 Accepts]: Start accepts. Automaton has 7345 states and 12012 transitions. Word has length 91 [2022-11-23 15:22:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:04,165 INFO L495 AbstractCegarLoop]: Abstraction has 7345 states and 12012 transitions. [2022-11-23 15:22:04,166 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:04,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7345 states and 12012 transitions. [2022-11-23 15:22:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 15:22:04,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:04,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:22:04,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1453916835, now seen corresponding path program 1 times [2022-11-23 15:22:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:04,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933612774] [2022-11-23 15:22:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:04,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:04,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:04,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933612774] [2022-11-23 15:22:04,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933612774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:04,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:04,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151784898] [2022-11-23 15:22:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:04,340 INFO L87 Difference]: Start difference. First operand 7345 states and 12012 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:05,379 INFO L93 Difference]: Finished difference Result 18517 states and 30506 transitions. [2022-11-23 15:22:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:05,380 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2022-11-23 15:22:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:05,490 INFO L225 Difference]: With dead ends: 18517 [2022-11-23 15:22:05,490 INFO L226 Difference]: Without dead ends: 12294 [2022-11-23 15:22:05,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:05,512 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 45 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:05,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 414 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2022-11-23 15:22:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 12289. [2022-11-23 15:22:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12289 states, 8995 states have (on average 1.500833796553641) internal successors, (13500), 8999 states have internal predecessors, (13500), 3270 states have call successors, (3270), 23 states have call predecessors, (3270), 23 states have return successors, (3269), 3268 states have call predecessors, (3269), 3269 states have call successors, (3269) [2022-11-23 15:22:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12289 states to 12289 states and 20039 transitions. [2022-11-23 15:22:06,728 INFO L78 Accepts]: Start accepts. Automaton has 12289 states and 20039 transitions. Word has length 92 [2022-11-23 15:22:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:06,729 INFO L495 AbstractCegarLoop]: Abstraction has 12289 states and 20039 transitions. [2022-11-23 15:22:06,730 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 12289 states and 20039 transitions. [2022-11-23 15:22:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 15:22:06,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:06,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:22:06,771 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash 922258140, now seen corresponding path program 1 times [2022-11-23 15:22:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:06,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775785792] [2022-11-23 15:22:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:06,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:06,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775785792] [2022-11-23 15:22:06,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775785792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:06,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:06,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:06,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220586458] [2022-11-23 15:22:06,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:06,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:06,897 INFO L87 Difference]: Start difference. First operand 12289 states and 20039 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:08,962 INFO L93 Difference]: Finished difference Result 32521 states and 53368 transitions. [2022-11-23 15:22:08,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:08,963 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2022-11-23 15:22:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:09,066 INFO L225 Difference]: With dead ends: 32521 [2022-11-23 15:22:09,067 INFO L226 Difference]: Without dead ends: 21806 [2022-11-23 15:22:09,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:09,106 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 43 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:09,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21806 states. [2022-11-23 15:22:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21806 to 21801. [2022-11-23 15:22:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21801 states, 16057 states have (on average 1.4929937099084511) internal successors, (23973), 16061 states have internal predecessors, (23973), 5720 states have call successors, (5720), 23 states have call predecessors, (5720), 23 states have return successors, (5719), 5718 states have call predecessors, (5719), 5719 states have call successors, (5719) [2022-11-23 15:22:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21801 states to 21801 states and 35412 transitions. [2022-11-23 15:22:11,316 INFO L78 Accepts]: Start accepts. Automaton has 21801 states and 35412 transitions. Word has length 93 [2022-11-23 15:22:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:11,317 INFO L495 AbstractCegarLoop]: Abstraction has 21801 states and 35412 transitions. [2022-11-23 15:22:11,318 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 21801 states and 35412 transitions. [2022-11-23 15:22:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 15:22:11,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:11,356 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:11,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:22:11,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:11,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:11,358 INFO L85 PathProgramCache]: Analyzing trace with hash 369669731, now seen corresponding path program 1 times [2022-11-23 15:22:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:11,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393103113] [2022-11-23 15:22:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:11,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:11,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:11,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393103113] [2022-11-23 15:22:11,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393103113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:11,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:11,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686665759] [2022-11-23 15:22:11,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:11,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:11,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:11,481 INFO L87 Difference]: Start difference. First operand 21801 states and 35412 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:14,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:14,361 INFO L93 Difference]: Finished difference Result 59208 states and 96620 transitions. [2022-11-23 15:22:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:14,362 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2022-11-23 15:22:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:14,572 INFO L225 Difference]: With dead ends: 59208 [2022-11-23 15:22:14,572 INFO L226 Difference]: Without dead ends: 39576 [2022-11-23 15:22:14,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:14,635 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 41 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:14,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:22:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39576 states. [2022-11-23 15:22:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39576 to 39571. [2022-11-23 15:22:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39571 states, 29314 states have (on average 1.4821928088967729) internal successors, (43449), 29318 states have internal predecessors, (43449), 10233 states have call successors, (10233), 23 states have call predecessors, (10233), 23 states have return successors, (10232), 10231 states have call predecessors, (10232), 10232 states have call successors, (10232) [2022-11-23 15:22:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39571 states to 39571 states and 63914 transitions. [2022-11-23 15:22:18,415 INFO L78 Accepts]: Start accepts. Automaton has 39571 states and 63914 transitions. Word has length 94 [2022-11-23 15:22:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:18,416 INFO L495 AbstractCegarLoop]: Abstraction has 39571 states and 63914 transitions. [2022-11-23 15:22:18,416 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 39571 states and 63914 transitions. [2022-11-23 15:22:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 15:22:18,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:18,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:22:18,457 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash -654194340, now seen corresponding path program 1 times [2022-11-23 15:22:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:18,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392852089] [2022-11-23 15:22:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:18,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:18,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:18,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392852089] [2022-11-23 15:22:18,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392852089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:18,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:18,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624343421] [2022-11-23 15:22:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:18,559 INFO L87 Difference]: Start difference. First operand 39571 states and 63914 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:23,285 INFO L93 Difference]: Finished difference Result 73106 states and 118255 transitions. [2022-11-23 15:22:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:23,285 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-11-23 15:22:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:23,719 INFO L225 Difference]: With dead ends: 73106 [2022-11-23 15:22:23,720 INFO L226 Difference]: Without dead ends: 73019 [2022-11-23 15:22:23,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:23,746 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 39 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:23,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:22:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73019 states. [2022-11-23 15:22:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73019 to 73014. [2022-11-23 15:22:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73014 states, 54389 states have (on average 1.4681461324900256) internal successors, (79851), 54393 states have internal predecessors, (79851), 18601 states have call successors, (18601), 23 states have call predecessors, (18601), 23 states have return successors, (18600), 18599 states have call predecessors, (18600), 18600 states have call successors, (18600) [2022-11-23 15:22:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73014 states to 73014 states and 117052 transitions. [2022-11-23 15:22:29,587 INFO L78 Accepts]: Start accepts. Automaton has 73014 states and 117052 transitions. Word has length 95 [2022-11-23 15:22:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:29,587 INFO L495 AbstractCegarLoop]: Abstraction has 73014 states and 117052 transitions. [2022-11-23 15:22:29,588 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:22:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 73014 states and 117052 transitions. [2022-11-23 15:22:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 15:22:29,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:29,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:29,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:22:29,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:29,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1540313628, now seen corresponding path program 1 times [2022-11-23 15:22:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:29,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362041589] [2022-11-23 15:22:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:22:31,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:31,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362041589] [2022-11-23 15:22:31,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362041589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:31,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:31,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-23 15:22:31,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656710095] [2022-11-23 15:22:31,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:31,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 15:22:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 15:22:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:22:31,291 INFO L87 Difference]: Start difference. First operand 73014 states and 117052 transitions. Second operand has 20 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-23 15:22:37,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:37,983 INFO L93 Difference]: Finished difference Result 73144 states and 117230 transitions. [2022-11-23 15:22:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 15:22:37,984 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 96 [2022-11-23 15:22:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:38,496 INFO L225 Difference]: With dead ends: 73144 [2022-11-23 15:22:38,496 INFO L226 Difference]: Without dead ends: 73140 [2022-11-23 15:22:38,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 15:22:38,524 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 321 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:38,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2575 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 15:22:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73140 states.